72721640

素因数分解:

$2^3\times 5^1\times {\mathrm{419}}^1\times {\mathrm{4339}}^1$

素因数の和:4769

約数の個数: 32

約数和(自身を含む): 164052000

約数和(自身を除く): 91330360

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 419, 838, 1676, 2095, 3352, 4190, 4339, 8380, 8678, 16760, 17356, 21695, 34712, 43390, 86780, 173560, 1818041, 3636082, 7272164, 9090205, 14544328, 18180410, 36360820, 72721640]

約数ペア:

[(1, 72721640), (2, 36360820), (4, 18180410), (5, 14544328), (8, 9090205), (10, 7272164), (20, 3636082), (40, 1818041), (419, 173560), (838, 86780), (1676, 43390), (2095, 34712), (3352, 21695), (4190, 17356), (4339, 16760), (8380, 8678)]