65924920

素因数分解:

$2^3\times 5^1\times {\mathrm{71}}^1\times {\mathrm{139}}^1\times {\mathrm{167}}^1$

素因数の和:388

約数の個数: 64

約数和(自身を含む): 152409600

約数和(自身を除く): 86484680

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 71, 139, 142, 167, 278, 284, 334, 355, 556, 568, 668, 695, 710, 835, 1112, 1336, 1390, 1420, 1670, 2780, 2840, 3340, 5560, 6680, 9869, 11857, 19738, 23213, 23714, 39476, 46426, 47428, 49345, 59285, 78952, 92852, 94856, 98690, 116065, 118570, 185704, 197380, 232130, 237140, 394760, 464260, 474280, 928520, 1648123, 3296246, 6592492, 8240615, 13184984, 16481230, 32962460, 65924920]

約数ペア:

[(1, 65924920), (2, 32962460), (4, 16481230), (5, 13184984), (8, 8240615), (10, 6592492), (20, 3296246), (40, 1648123), (71, 928520), (139, 474280), (142, 464260), (167, 394760), (278, 237140), (284, 232130), (334, 197380), (355, 185704), (556, 118570), (568, 116065), (668, 98690), (695, 94856), (710, 92852), (835, 78952), (1112, 59285), (1336, 49345), (1390, 47428), (1420, 46426), (1670, 39476), (2780, 23714), (2840, 23213), (3340, 19738), (5560, 11857), (6680, 9869)]