20564830

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{73}}^1\times {\mathrm{197}}^1$

素因数の和:301

約数の個数: 64

約数和(自身を含む): 44307648

約数和(自身を除く): 23742818

約数列:

[1, 2, 5, 10, 11, 13, 22, 26, 55, 65, 73, 110, 130, 143, 146, 197, 286, 365, 394, 715, 730, 803, 949, 985, 1430, 1606, 1898, 1970, 2167, 2561, 4015, 4334, 4745, 5122, 8030, 9490, 10439, 10835, 12805, 14381, 20878, 21670, 25610, 28171, 28762, 52195, 56342, 71905, 104390, 140855, 143810, 158191, 186953, 281710, 316382, 373906, 790955, 934765, 1581910, 1869530, 2056483, 4112966, 10282415, 20564830]

約数ペア:

[(1, 20564830), (2, 10282415), (5, 4112966), (10, 2056483), (11, 1869530), (13, 1581910), (22, 934765), (26, 790955), (55, 373906), (65, 316382), (73, 281710), (110, 186953), (130, 158191), (143, 143810), (146, 140855), (197, 104390), (286, 71905), (365, 56342), (394, 52195), (715, 28762), (730, 28171), (803, 25610), (949, 21670), (985, 20878), (1430, 14381), (1606, 12805), (1898, 10835), (1970, 10439), (2167, 9490), (2561, 8030), (4015, 5122), (4334, 4745)]