257464354

素因数分解:

$2^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{53}}^1\times {\mathrm{20411}}^1$

素因数の和:20490

約数の個数: 32

約数和(自身を含む): 476171136

約数和(自身を除く): 218706782

約数列:

[1, 2, 7, 14, 17, 34, 53, 106, 119, 238, 371, 742, 901, 1802, 6307, 12614, 20411, 40822, 142877, 285754, 346987, 693974, 1081783, 2163566, 2428909, 4857818, 7572481, 15144962, 18390311, 36780622, 128732177, 257464354]

約数ペア:

[(1, 257464354), (2, 128732177), (7, 36780622), (14, 18390311), (17, 15144962), (34, 7572481), (53, 4857818), (106, 2428909), (119, 2163566), (238, 1081783), (371, 693974), (742, 346987), (901, 285754), (1802, 142877), (6307, 40822), (12614, 20411)]