20280551320

素因数分解:

$2^3\times 5^1\times {\mathrm{8923}}^1\times {\mathrm{56821}}^1$

素因数の和:65755

約数の個数: 32

約数和(自身を含む): 45637157520

約数和(自身を除く): 25356606200

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 8923, 17846, 35692, 44615, 56821, 71384, 89230, 113642, 178460, 227284, 284105, 356920, 454568, 568210, 1136420, 2272840, 507013783, 1014027566, 2028055132, 2535068915, 4056110264, 5070137830, 10140275660, 20280551320]

約数ペア:

[(1, 20280551320), (2, 10140275660), (4, 5070137830), (5, 4056110264), (8, 2535068915), (10, 2028055132), (20, 1014027566), (40, 507013783), (8923, 2272840), (17846, 1136420), (35692, 568210), (44615, 454568), (56821, 356920), (71384, 284105), (89230, 227284), (113642, 178460)]