18856360

素因数分解:

$2^3\times 5^1\times {\mathrm{19}}^1\times {\mathrm{43}}^1\times {\mathrm{577}}^1$

素因数の和:650

約数の個数: 64

約数和(自身を含む): 45777600

約数和(自身を除く): 26921240

約数列:

[1, 2, 4, 5, 8, 10, 19, 20, 38, 40, 43, 76, 86, 95, 152, 172, 190, 215, 344, 380, 430, 577, 760, 817, 860, 1154, 1634, 1720, 2308, 2885, 3268, 4085, 4616, 5770, 6536, 8170, 10963, 11540, 16340, 21926, 23080, 24811, 32680, 43852, 49622, 54815, 87704, 99244, 109630, 124055, 198488, 219260, 248110, 438520, 471409, 496220, 942818, 992440, 1885636, 2357045, 3771272, 4714090, 9428180, 18856360]

約数ペア:

[(1, 18856360), (2, 9428180), (4, 4714090), (5, 3771272), (8, 2357045), (10, 1885636), (19, 992440), (20, 942818), (38, 496220), (40, 471409), (43, 438520), (76, 248110), (86, 219260), (95, 198488), (152, 124055), (172, 109630), (190, 99244), (215, 87704), (344, 54815), (380, 49622), (430, 43852), (577, 32680), (760, 24811), (817, 23080), (860, 21926), (1154, 16340), (1634, 11540), (1720, 10963), (2308, 8170), (2885, 6536), (3268, 5770), (4085, 4616)]