20712120

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{71}}^1$

素因数の和:126

約数の個数: 256

約数和(自身を含む): 78382080

約数和(自身を除く): 57669960

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 11, 12, 13, 15, 17, 20, 22, 24, 26, 30, 33, 34, 39, 40, 44, 51, 52, 55, 60, 65, 66, 68, 71, 78, 85, 88, 102, 104, 110, 120, 130, 132, 136, 142, 143, 156, 165, 170, 187, 195, 204, 213, 220, 221, 255, 260, 264, 284, 286, 312, 330, 340, 355, 374, 390, 408, 426, 429, 440, 442, 510, 520, 561, 568, 572, 660, 663, 680, 710, 715, 748, 780, 781, 852, 858, 884, 923, 935, 1020, 1065, 1105, 1122, 1144, 1207, 1320, 1326, 1420, 1430, 1496, 1560, 1562, 1704, 1716, 1768, 1846, 1870, 2040, 2130, 2145, 2210, 2244, 2343, 2414, 2431, 2652, 2769, 2805, 2840, 2860, 3124, 3315, 3432, 3621, 3692, 3740, 3905, 4260, 4290, 4420, 4488, 4615, 4686, 4828, 4862, 5304, 5538, 5610, 5720, 6035, 6248, 6630, 7242, 7293, 7384, 7480, 7810, 8520, 8580, 8840, 9230, 9372, 9656, 9724, 10153, 11076, 11220, 11715, 12070, 12155, 13260, 13277, 13845, 14484, 14586, 15620, 15691, 17160, 18105, 18460, 18744, 19448, 20306, 22152, 22440, 23430, 24140, 24310, 26520, 26554, 27690, 28968, 29172, 30459, 31240, 31382, 36210, 36465, 36920, 39831, 40612, 46860, 47073, 48280, 48620, 50765, 53108, 55380, 58344, 60918, 62764, 66385, 72420, 72930, 78455, 79662, 81224, 93720, 94146, 97240, 101530, 106216, 110760, 121836, 125528, 132770, 144840, 145860, 152295, 156910, 159324, 172601, 188292, 199155, 203060, 235365, 243672, 265540, 291720, 304590, 313820, 318648, 345202, 376584, 398310, 406120, 470730, 517803, 531080, 609180, 627640, 690404, 796620, 863005, 941460, 1035606, 1218360, 1380808, 1593240, 1726010, 1882920, 2071212, 2589015, 3452020, 4142424, 5178030, 6904040, 10356060, 20712120]

約数ペア:

[(1, 20712120), (2, 10356060), (3, 6904040), (4, 5178030), (5, 4142424), (6, 3452020), (8, 2589015), (10, 2071212), (11, 1882920), (12, 1726010), (13, 1593240), (15, 1380808), (17, 1218360), (20, 1035606), (22, 941460), (24, 863005), (26, 796620), (30, 690404), (33, 627640), (34, 609180), (39, 531080), (40, 517803), (44, 470730), (51, 406120), (52, 398310), (55, 376584), (60, 345202), (65, 318648), (66, 313820), (68, 304590), (71, 291720), (78, 265540), (85, 243672), (88, 235365), (102, 203060), (104, 199155), (110, 188292), (120, 172601), (130, 159324), (132, 156910), (136, 152295), (142, 145860), (143, 144840), (156, 132770), (165, 125528), (170, 121836), (187, 110760), (195, 106216), (204, 101530), (213, 97240), (220, 94146), (221, 93720), (255, 81224), (260, 79662), (264, 78455), (284, 72930), (286, 72420), (312, 66385), (330, 62764), (340, 60918), (355, 58344), (374, 55380), (390, 53108), (408, 50765), (426, 48620), (429, 48280), (440, 47073), (442, 46860), (510, 40612), (520, 39831), (561, 36920), (568, 36465), (572, 36210), (660, 31382), (663, 31240), (680, 30459), (710, 29172), (715, 28968), (748, 27690), (780, 26554), (781, 26520), (852, 24310), (858, 24140), (884, 23430), (923, 22440), (935, 22152), (1020, 20306), (1065, 19448), (1105, 18744), (1122, 18460), (1144, 18105), (1207, 17160), (1320, 15691), (1326, 15620), (1420, 14586), (1430, 14484), (1496, 13845), (1560, 13277), (1562, 13260), (1704, 12155), (1716, 12070), (1768, 11715), (1846, 11220), (1870, 11076), (2040, 10153), (2130, 9724), (2145, 9656), (2210, 9372), (2244, 9230), (2343, 8840), (2414, 8580), (2431, 8520), (2652, 7810), (2769, 7480), (2805, 7384), (2840, 7293), (2860, 7242), (3124, 6630), (3315, 6248), (3432, 6035), (3621, 5720), (3692, 5610), (3740, 5538), (3905, 5304), (4260, 4862), (4290, 4828), (4420, 4686), (4488, 4615)]