257398520

素因数分解:

$2^3\times 5^1\times {\mathrm{23}}^1\times {\mathrm{127}}^1\times {\mathrm{2203}}^1$

素因数の和:2364

約数の個数: 64

約数和(自身を含む): 609361920

約数和(自身を除く): 351963400

約数列:

[1, 2, 4, 5, 8, 10, 20, 23, 40, 46, 92, 115, 127, 184, 230, 254, 460, 508, 635, 920, 1016, 1270, 2203, 2540, 2921, 4406, 5080, 5842, 8812, 11015, 11684, 14605, 17624, 22030, 23368, 29210, 44060, 50669, 58420, 88120, 101338, 116840, 202676, 253345, 279781, 405352, 506690, 559562, 1013380, 1119124, 1398905, 2026760, 2238248, 2797810, 5595620, 6434963, 11191240, 12869926, 25739852, 32174815, 51479704, 64349630, 128699260, 257398520]

約数ペア:

[(1, 257398520), (2, 128699260), (4, 64349630), (5, 51479704), (8, 32174815), (10, 25739852), (20, 12869926), (23, 11191240), (40, 6434963), (46, 5595620), (92, 2797810), (115, 2238248), (127, 2026760), (184, 1398905), (230, 1119124), (254, 1013380), (460, 559562), (508, 506690), (635, 405352), (920, 279781), (1016, 253345), (1270, 202676), (2203, 116840), (2540, 101338), (2921, 88120), (4406, 58420), (5080, 50669), (5842, 44060), (8812, 29210), (11015, 23368), (11684, 22030), (14605, 17624)]