18397980

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{43}}^1\times {\mathrm{2377}}^1$

素因数の和:2435

約数の個数: 72

約数和(自身を含む): 57129072

約数和(自身を除く): 38731092

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 43, 45, 60, 86, 90, 129, 172, 180, 215, 258, 387, 430, 516, 645, 774, 860, 1290, 1548, 1935, 2377, 2580, 3870, 4754, 7131, 7740, 9508, 11885, 14262, 21393, 23770, 28524, 35655, 42786, 47540, 71310, 85572, 102211, 106965, 142620, 204422, 213930, 306633, 408844, 427860, 511055, 613266, 919899, 1022110, 1226532, 1533165, 1839798, 2044220, 3066330, 3679596, 4599495, 6132660, 9198990, 18397980]

約数ペア:

[(1, 18397980), (2, 9198990), (3, 6132660), (4, 4599495), (5, 3679596), (6, 3066330), (9, 2044220), (10, 1839798), (12, 1533165), (15, 1226532), (18, 1022110), (20, 919899), (30, 613266), (36, 511055), (43, 427860), (45, 408844), (60, 306633), (86, 213930), (90, 204422), (129, 142620), (172, 106965), (180, 102211), (215, 85572), (258, 71310), (387, 47540), (430, 42786), (516, 35655), (645, 28524), (774, 23770), (860, 21393), (1290, 14262), (1548, 11885), (1935, 9508), (2377, 7740), (2580, 7131), (3870, 4754)]