72179920

素因数分解:

$2^4\times 5^1\times {\mathrm{139}}^1\times {\mathrm{6491}}^1$

素因数の和:6643

約数の個数: 40

約数和(自身を含む): 169051680

約数和(自身を除く): 96871760

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 139, 278, 556, 695, 1112, 1390, 2224, 2780, 5560, 6491, 11120, 12982, 25964, 32455, 51928, 64910, 103856, 129820, 259640, 519280, 902249, 1804498, 3608996, 4511245, 7217992, 9022490, 14435984, 18044980, 36089960, 72179920]

約数ペア:

[(1, 72179920), (2, 36089960), (4, 18044980), (5, 14435984), (8, 9022490), (10, 7217992), (16, 4511245), (20, 3608996), (40, 1804498), (80, 902249), (139, 519280), (278, 259640), (556, 129820), (695, 103856), (1112, 64910), (1390, 51928), (2224, 32455), (2780, 25964), (5560, 12982), (6491, 11120)]