15978380

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{59}}^1\times {\mathrm{1231}}^1$

素因数の和:1310

約数の個数: 48

約数和(自身を含む): 37255680

約数和(自身を除く): 21277300

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 59, 110, 118, 220, 236, 295, 590, 649, 1180, 1231, 1298, 2462, 2596, 3245, 4924, 6155, 6490, 12310, 12980, 13541, 24620, 27082, 54164, 67705, 72629, 135410, 145258, 270820, 290516, 363145, 726290, 798919, 1452580, 1597838, 3195676, 3994595, 7989190, 15978380]

約数ペア:

[(1, 15978380), (2, 7989190), (4, 3994595), (5, 3195676), (10, 1597838), (11, 1452580), (20, 798919), (22, 726290), (44, 363145), (55, 290516), (59, 270820), (110, 145258), (118, 135410), (220, 72629), (236, 67705), (295, 54164), (590, 27082), (649, 24620), (1180, 13541), (1231, 12980), (1298, 12310), (2462, 6490), (2596, 6155), (3245, 4924)]