19829680

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{829}}^1$

素因数の和:878

約数の個数: 80

約数和(自身を含む): 51871680

約数和(自身を除く): 32042000

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 23, 26, 40, 46, 52, 65, 80, 92, 104, 115, 130, 184, 208, 230, 260, 299, 368, 460, 520, 598, 829, 920, 1040, 1196, 1495, 1658, 1840, 2392, 2990, 3316, 4145, 4784, 5980, 6632, 8290, 10777, 11960, 13264, 16580, 19067, 21554, 23920, 33160, 38134, 43108, 53885, 66320, 76268, 86216, 95335, 107770, 152536, 172432, 190670, 215540, 247871, 305072, 381340, 431080, 495742, 762680, 862160, 991484, 1239355, 1525360, 1982968, 2478710, 3965936, 4957420, 9914840, 19829680]

約数ペア:

[(1, 19829680), (2, 9914840), (4, 4957420), (5, 3965936), (8, 2478710), (10, 1982968), (13, 1525360), (16, 1239355), (20, 991484), (23, 862160), (26, 762680), (40, 495742), (46, 431080), (52, 381340), (65, 305072), (80, 247871), (92, 215540), (104, 190670), (115, 172432), (130, 152536), (184, 107770), (208, 95335), (230, 86216), (260, 76268), (299, 66320), (368, 53885), (460, 43108), (520, 38134), (598, 33160), (829, 23920), (920, 21554), (1040, 19067), (1196, 16580), (1495, 13264), (1658, 11960), (1840, 10777), (2392, 8290), (2990, 6632), (3316, 5980), (4145, 4784)]