399825964

素因数分解:

$2^2\times {\mathrm{61}}^1\times {\mathrm{73}}^1\times {\mathrm{22447}}^1$

素因数の和:22585

約数の個数: 24

約数和(自身を含む): 720939968

約数和(自身を除く): 321114004

約数列:

[1, 2, 4, 61, 73, 122, 146, 244, 292, 4453, 8906, 17812, 22447, 44894, 89788, 1369267, 1638631, 2738534, 3277262, 5477068, 6554524, 99956491, 199912982, 399825964]

約数ペア:

[(1, 399825964), (2, 199912982), (4, 99956491), (61, 6554524), (73, 5477068), (122, 3277262), (146, 2738534), (244, 1638631), (292, 1369267), (4453, 89788), (8906, 44894), (17812, 22447)]