90919900

素因数分解:

$2^2\times 5^2\times {\mathrm{31}}^1\times {\mathrm{139}}^1\times {\mathrm{211}}^1$

素因数の和:395

約数の個数: 72

約数和(自身を含む): 206097920

約数和(自身を除く): 115178020

約数列:

[1, 2, 4, 5, 10, 20, 25, 31, 50, 62, 100, 124, 139, 155, 211, 278, 310, 422, 556, 620, 695, 775, 844, 1055, 1390, 1550, 2110, 2780, 3100, 3475, 4220, 4309, 5275, 6541, 6950, 8618, 10550, 13082, 13900, 17236, 21100, 21545, 26164, 29329, 32705, 43090, 58658, 65410, 86180, 107725, 117316, 130820, 146645, 163525, 215450, 293290, 327050, 430900, 586580, 654100, 733225, 909199, 1466450, 1818398, 2932900, 3636796, 4545995, 9091990, 18183980, 22729975, 45459950, 90919900]

約数ペア:

[(1, 90919900), (2, 45459950), (4, 22729975), (5, 18183980), (10, 9091990), (20, 4545995), (25, 3636796), (31, 2932900), (50, 1818398), (62, 1466450), (100, 909199), (124, 733225), (139, 654100), (155, 586580), (211, 430900), (278, 327050), (310, 293290), (422, 215450), (556, 163525), (620, 146645), (695, 130820), (775, 117316), (844, 107725), (1055, 86180), (1390, 65410), (1550, 58658), (2110, 43090), (2780, 32705), (3100, 29329), (3475, 26164), (4220, 21545), (4309, 21100), (5275, 17236), (6541, 13900), (6950, 13082), (8618, 10550)]