19705140

素因数分解:

$2^2\times 3^3\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{401}}^1$

素因数の和:439

約数の個数: 192

約数和(自身を含む): 75640320

約数和(自身を除く): 55935180

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 13, 14, 15, 18, 20, 21, 26, 27, 28, 30, 35, 36, 39, 42, 45, 52, 54, 60, 63, 65, 70, 78, 84, 90, 91, 105, 108, 117, 126, 130, 135, 140, 156, 180, 182, 189, 195, 210, 234, 252, 260, 270, 273, 315, 351, 364, 378, 390, 401, 420, 455, 468, 540, 546, 585, 630, 702, 756, 780, 802, 819, 910, 945, 1092, 1170, 1203, 1260, 1365, 1404, 1604, 1638, 1755, 1820, 1890, 2005, 2340, 2406, 2457, 2730, 2807, 3276, 3510, 3609, 3780, 4010, 4095, 4812, 4914, 5213, 5460, 5614, 6015, 7020, 7218, 8020, 8190, 8421, 9828, 10426, 10827, 11228, 12030, 12285, 14035, 14436, 15639, 16380, 16842, 18045, 20852, 21654, 24060, 24570, 25263, 26065, 28070, 31278, 33684, 36090, 36491, 42105, 43308, 46917, 49140, 50526, 52130, 54135, 56140, 62556, 72180, 72982, 75789, 78195, 84210, 93834, 101052, 104260, 108270, 109473, 126315, 140751, 145964, 151578, 156390, 168420, 182455, 187668, 216540, 218946, 234585, 252630, 281502, 303156, 312780, 328419, 364910, 378945, 437892, 469170, 505260, 547365, 563004, 656838, 703755, 729820, 757890, 938340, 985257, 1094730, 1313676, 1407510, 1515780, 1642095, 1970514, 2189460, 2815020, 3284190, 3941028, 4926285, 6568380, 9852570, 19705140]

約数ペア:

[(1, 19705140), (2, 9852570), (3, 6568380), (4, 4926285), (5, 3941028), (6, 3284190), (7, 2815020), (9, 2189460), (10, 1970514), (12, 1642095), (13, 1515780), (14, 1407510), (15, 1313676), (18, 1094730), (20, 985257), (21, 938340), (26, 757890), (27, 729820), (28, 703755), (30, 656838), (35, 563004), (36, 547365), (39, 505260), (42, 469170), (45, 437892), (52, 378945), (54, 364910), (60, 328419), (63, 312780), (65, 303156), (70, 281502), (78, 252630), (84, 234585), (90, 218946), (91, 216540), (105, 187668), (108, 182455), (117, 168420), (126, 156390), (130, 151578), (135, 145964), (140, 140751), (156, 126315), (180, 109473), (182, 108270), (189, 104260), (195, 101052), (210, 93834), (234, 84210), (252, 78195), (260, 75789), (270, 72982), (273, 72180), (315, 62556), (351, 56140), (364, 54135), (378, 52130), (390, 50526), (401, 49140), (420, 46917), (455, 43308), (468, 42105), (540, 36491), (546, 36090), (585, 33684), (630, 31278), (702, 28070), (756, 26065), (780, 25263), (802, 24570), (819, 24060), (910, 21654), (945, 20852), (1092, 18045), (1170, 16842), (1203, 16380), (1260, 15639), (1365, 14436), (1404, 14035), (1604, 12285), (1638, 12030), (1755, 11228), (1820, 10827), (1890, 10426), (2005, 9828), (2340, 8421), (2406, 8190), (2457, 8020), (2730, 7218), (2807, 7020), (3276, 6015), (3510, 5614), (3609, 5460), (3780, 5213), (4010, 4914), (4095, 4812)]