21295560

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{73}}^1$

素因数の和:128

約数の個数: 256

約数和(自身を含む): 80559360

約数和(自身を除く): 59263800

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, 73, 78, 85, 88, 102, 104, 110, 120, 130, 132, 136, 143, 146, 156, 165, 170, 187, 195, 204, 219, 220, 221, 255, 260, 264, 286, 292, 312, 330, 340, 365, 374, 390, 408, 429, 438, 440, 442, 510, 520, 561, 572, 584, 660, 663, 680, 715, 730, 748, 780, 803, 858, 876, 884, 935, 949, 1020, 1095, 1105, 1122, 1144, 1241, 1320, 1326, 1430, 1460, 1496, 1560, 1606, 1716, 1752, 1768, 1870, 1898, 2040, 2145, 2190, 2210, 2244, 2409, 2431, 2482, 2652, 2805, 2847, 2860, 2920, 3212, 3315, 3432, 3723, 3740, 3796, 4015, 4290, 4380, 4420, 4488, 4745, 4818, 4862, 4964, 5304, 5610, 5694, 5720, 6205, 6424, 6630, 7293, 7446, 7480, 7592, 8030, 8580, 8760, 8840, 9490, 9636, 9724, 9928, 10439, 11220, 11388, 12045, 12155, 12410, 13260, 13651, 14235, 14586, 14892, 16060, 16133, 17160, 18615, 18980, 19272, 19448, 20878, 22440, 22776, 24090, 24310, 24820, 26520, 27302, 28470, 29172, 29784, 31317, 32120, 32266, 36465, 37230, 37960, 40953, 41756, 48180, 48399, 48620, 49640, 52195, 54604, 56940, 58344, 62634, 64532, 68255, 72930, 74460, 80665, 81906, 83512, 96360, 96798, 97240, 104390, 109208, 113880, 125268, 129064, 136510, 145860, 148920, 156585, 161330, 163812, 177463, 193596, 204765, 208780, 241995, 250536, 273020, 291720, 313170, 322660, 327624, 354926, 387192, 409530, 417560, 483990, 532389, 546040, 626340, 645320, 709852, 819060, 887315, 967980, 1064778, 1252680, 1419704, 1638120, 1774630, 1935960, 2129556, 2661945, 3549260, 4259112, 5323890, 7098520, 10647780, 21295560]

約数ペア:

[(1, 21295560), (2, 10647780), (3, 7098520), (4, 5323890), (5, 4259112), (6, 3549260), (8, 2661945), (10, 2129556), (11, 1935960), (12, 1774630), (13, 1638120), (15, 1419704), (17, 1252680), (20, 1064778), (22, 967980), (24, 887315), (26, 819060), (30, 709852), (33, 645320), (34, 626340), (39, 546040), (40, 532389), (44, 483990), (51, 417560), (52, 409530), (55, 387192), (60, 354926), (65, 327624), (66, 322660), (68, 313170), (73, 291720), (78, 273020), (85, 250536), (88, 241995), (102, 208780), (104, 204765), (110, 193596), (120, 177463), (130, 163812), (132, 161330), (136, 156585), (143, 148920), (146, 145860), (156, 136510), (165, 129064), (170, 125268), (187, 113880), (195, 109208), (204, 104390), (219, 97240), (220, 96798), (221, 96360), (255, 83512), (260, 81906), (264, 80665), (286, 74460), (292, 72930), (312, 68255), (330, 64532), (340, 62634), (365, 58344), (374, 56940), (390, 54604), (408, 52195), (429, 49640), (438, 48620), (440, 48399), (442, 48180), (510, 41756), (520, 40953), (561, 37960), (572, 37230), (584, 36465), (660, 32266), (663, 32120), (680, 31317), (715, 29784), (730, 29172), (748, 28470), (780, 27302), (803, 26520), (858, 24820), (876, 24310), (884, 24090), (935, 22776), (949, 22440), (1020, 20878), (1095, 19448), (1105, 19272), (1122, 18980), (1144, 18615), (1241, 17160), (1320, 16133), (1326, 16060), (1430, 14892), (1460, 14586), (1496, 14235), (1560, 13651), (1606, 13260), (1716, 12410), (1752, 12155), (1768, 12045), (1870, 11388), (1898, 11220), (2040, 10439), (2145, 9928), (2190, 9724), (2210, 9636), (2244, 9490), (2409, 8840), (2431, 8760), (2482, 8580), (2652, 8030), (2805, 7592), (2847, 7480), (2860, 7446), (2920, 7293), (3212, 6630), (3315, 6424), (3432, 6205), (3723, 5720), (3740, 5694), (3796, 5610), (4015, 5304), (4290, 4964), (4380, 4862), (4420, 4818), (4488, 4745)]