78992560

素因数分解:

$2^4\times 5^1\times {\mathrm{61}}^1\times {\mathrm{16187}}^1$

素因数の和:16261

約数の個数: 40

約数和(自身を含む): 186680016

約数和(自身を除く): 107687456

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 61, 80, 122, 244, 305, 488, 610, 976, 1220, 2440, 4880, 16187, 32374, 64748, 80935, 129496, 161870, 258992, 323740, 647480, 987407, 1294960, 1974814, 3949628, 4937035, 7899256, 9874070, 15798512, 19748140, 39496280, 78992560]

約数ペア:

[(1, 78992560), (2, 39496280), (4, 19748140), (5, 15798512), (8, 9874070), (10, 7899256), (16, 4937035), (20, 3949628), (40, 1974814), (61, 1294960), (80, 987407), (122, 647480), (244, 323740), (305, 258992), (488, 161870), (610, 129496), (976, 80935), (1220, 64748), (2440, 32374), (4880, 16187)]