28419920

素因数分解:

$2^4\times 5^1\times {\mathrm{17}}^1\times {\mathrm{20897}}^1$

素因数の和:20927

約数の個数: 40

約数和(自身を含む): 69966504

約数和(自身を除く): 41546584

約数列:

[1, 2, 4, 5, 8, 10, 16, 17, 20, 34, 40, 68, 80, 85, 136, 170, 272, 340, 680, 1360, 20897, 41794, 83588, 104485, 167176, 208970, 334352, 355249, 417940, 710498, 835880, 1420996, 1671760, 1776245, 2841992, 3552490, 5683984, 7104980, 14209960, 28419920]

約数ペア:

[(1, 28419920), (2, 14209960), (4, 7104980), (5, 5683984), (8, 3552490), (10, 2841992), (16, 1776245), (17, 1671760), (20, 1420996), (34, 835880), (40, 710498), (68, 417940), (80, 355249), (85, 334352), (136, 208970), (170, 167176), (272, 104485), (340, 83588), (680, 41794), (1360, 20897)]