18972640

素因数分解:

$2^5\times 5^1\times {\mathrm{19}}^1\times {\mathrm{79}}^2$

素因数の和:192

約数の個数: 72

約数和(自身を含む): 47786760

約数和(自身を除く): 28814120

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 32, 38, 40, 76, 79, 80, 95, 152, 158, 160, 190, 304, 316, 380, 395, 608, 632, 760, 790, 1264, 1501, 1520, 1580, 2528, 3002, 3040, 3160, 6004, 6241, 6320, 7505, 12008, 12482, 12640, 15010, 24016, 24964, 30020, 31205, 48032, 49928, 60040, 62410, 99856, 118579, 120080, 124820, 199712, 237158, 240160, 249640, 474316, 499280, 592895, 948632, 998560, 1185790, 1897264, 2371580, 3794528, 4743160, 9486320, 18972640]

約数ペア:

[(1, 18972640), (2, 9486320), (4, 4743160), (5, 3794528), (8, 2371580), (10, 1897264), (16, 1185790), (19, 998560), (20, 948632), (32, 592895), (38, 499280), (40, 474316), (76, 249640), (79, 240160), (80, 237158), (95, 199712), (152, 124820), (158, 120080), (160, 118579), (190, 99856), (304, 62410), (316, 60040), (380, 49928), (395, 48032), (608, 31205), (632, 30020), (760, 24964), (790, 24016), (1264, 15010), (1501, 12640), (1520, 12482), (1580, 12008), (2528, 7505), (3002, 6320), (3040, 6241), (3160, 6004)]