18901480

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{163}}^1\times {\mathrm{223}}^1$

素因数の和:410

約数の個数: 64

約数和(自身を含む): 46287360

約数和(自身を除く): 27385880

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 163, 223, 260, 326, 446, 520, 652, 815, 892, 1115, 1304, 1630, 1784, 2119, 2230, 2899, 3260, 4238, 4460, 5798, 6520, 8476, 8920, 10595, 11596, 14495, 16952, 21190, 23192, 28990, 36349, 42380, 57980, 72698, 84760, 115960, 145396, 181745, 290792, 363490, 472537, 726980, 945074, 1453960, 1890148, 2362685, 3780296, 4725370, 9450740, 18901480]

約数ペア:

[(1, 18901480), (2, 9450740), (4, 4725370), (5, 3780296), (8, 2362685), (10, 1890148), (13, 1453960), (20, 945074), (26, 726980), (40, 472537), (52, 363490), (65, 290792), (104, 181745), (130, 145396), (163, 115960), (223, 84760), (260, 72698), (326, 57980), (446, 42380), (520, 36349), (652, 28990), (815, 23192), (892, 21190), (1115, 16952), (1304, 14495), (1630, 11596), (1784, 10595), (2119, 8920), (2230, 8476), (2899, 6520), (3260, 5798), (4238, 4460)]