18810760

素因数分解:

$2^3\times 5^1\times {\mathrm{19}}^1\times {\mathrm{53}}^1\times {\mathrm{467}}^1$

素因数の和:550

約数の個数: 64

約数和(自身を含む): 45489600

約数和(自身を除く): 26678840

約数列:

[1, 2, 4, 5, 8, 10, 19, 20, 38, 40, 53, 76, 95, 106, 152, 190, 212, 265, 380, 424, 467, 530, 760, 934, 1007, 1060, 1868, 2014, 2120, 2335, 3736, 4028, 4670, 5035, 8056, 8873, 9340, 10070, 17746, 18680, 20140, 24751, 35492, 40280, 44365, 49502, 70984, 88730, 99004, 123755, 177460, 198008, 247510, 354920, 470269, 495020, 940538, 990040, 1881076, 2351345, 3762152, 4702690, 9405380, 18810760]

約数ペア:

[(1, 18810760), (2, 9405380), (4, 4702690), (5, 3762152), (8, 2351345), (10, 1881076), (19, 990040), (20, 940538), (38, 495020), (40, 470269), (53, 354920), (76, 247510), (95, 198008), (106, 177460), (152, 123755), (190, 99004), (212, 88730), (265, 70984), (380, 49502), (424, 44365), (467, 40280), (530, 35492), (760, 24751), (934, 20140), (1007, 18680), (1060, 17746), (1868, 10070), (2014, 9340), (2120, 8873), (2335, 8056), (3736, 5035), (4028, 4670)]