20642440

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{53}}^1\times {\mathrm{107}}^1$

素因数の和:191

約数の個数: 128

約数和(自身を含む): 58786560

約数和(自身を除く): 38144120

約数列:

[1, 2, 4, 5, 7, 8, 10, 13, 14, 20, 26, 28, 35, 40, 52, 53, 56, 65, 70, 91, 104, 106, 107, 130, 140, 182, 212, 214, 260, 265, 280, 364, 371, 424, 428, 455, 520, 530, 535, 689, 728, 742, 749, 856, 910, 1060, 1070, 1378, 1391, 1484, 1498, 1820, 1855, 2120, 2140, 2756, 2782, 2968, 2996, 3445, 3640, 3710, 3745, 4280, 4823, 5512, 5564, 5671, 5992, 6890, 6955, 7420, 7490, 9646, 9737, 11128, 11342, 13780, 13910, 14840, 14980, 19292, 19474, 22684, 24115, 27560, 27820, 28355, 29960, 38584, 38948, 39697, 45368, 48230, 48685, 55640, 56710, 73723, 77896, 79394, 96460, 97370, 113420, 147446, 158788, 192920, 194740, 198485, 226840, 294892, 317576, 368615, 389480, 396970, 516061, 589784, 737230, 793940, 1032122, 1474460, 1587880, 2064244, 2580305, 2948920, 4128488, 5160610, 10321220, 20642440]

約数ペア:

[(1, 20642440), (2, 10321220), (4, 5160610), (5, 4128488), (7, 2948920), (8, 2580305), (10, 2064244), (13, 1587880), (14, 1474460), (20, 1032122), (26, 793940), (28, 737230), (35, 589784), (40, 516061), (52, 396970), (53, 389480), (56, 368615), (65, 317576), (70, 294892), (91, 226840), (104, 198485), (106, 194740), (107, 192920), (130, 158788), (140, 147446), (182, 113420), (212, 97370), (214, 96460), (260, 79394), (265, 77896), (280, 73723), (364, 56710), (371, 55640), (424, 48685), (428, 48230), (455, 45368), (520, 39697), (530, 38948), (535, 38584), (689, 29960), (728, 28355), (742, 27820), (749, 27560), (856, 24115), (910, 22684), (1060, 19474), (1070, 19292), (1378, 14980), (1391, 14840), (1484, 13910), (1498, 13780), (1820, 11342), (1855, 11128), (2120, 9737), (2140, 9646), (2756, 7490), (2782, 7420), (2968, 6955), (2996, 6890), (3445, 5992), (3640, 5671), (3710, 5564), (3745, 5512), (4280, 4823)]