18876880

素因数分解:

$2^4\times 5^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{1129}}^1$

素因数の和:1172

約数の個数: 80

約数和(自身を含む): 50443200

約数和(自身を除く): 31566320

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 19, 20, 22, 38, 40, 44, 55, 76, 80, 88, 95, 110, 152, 176, 190, 209, 220, 304, 380, 418, 440, 760, 836, 880, 1045, 1129, 1520, 1672, 2090, 2258, 3344, 4180, 4516, 5645, 8360, 9032, 11290, 12419, 16720, 18064, 21451, 22580, 24838, 42902, 45160, 49676, 62095, 85804, 90320, 99352, 107255, 124190, 171608, 198704, 214510, 235961, 248380, 343216, 429020, 471922, 496760, 858040, 943844, 993520, 1179805, 1716080, 1887688, 2359610, 3775376, 4719220, 9438440, 18876880]

約数ペア:

[(1, 18876880), (2, 9438440), (4, 4719220), (5, 3775376), (8, 2359610), (10, 1887688), (11, 1716080), (16, 1179805), (19, 993520), (20, 943844), (22, 858040), (38, 496760), (40, 471922), (44, 429020), (55, 343216), (76, 248380), (80, 235961), (88, 214510), (95, 198704), (110, 171608), (152, 124190), (176, 107255), (190, 99352), (209, 90320), (220, 85804), (304, 62095), (380, 49676), (418, 45160), (440, 42902), (760, 24838), (836, 22580), (880, 21451), (1045, 18064), (1129, 16720), (1520, 12419), (1672, 11290), (2090, 9032), (2258, 8360), (3344, 5645), (4180, 4516)]