256742655

素因数分解:

$3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{83}}^1\times {\mathrm{547}}^1$

素因数の和:680

約数の個数: 64

約数和(自身を含む): 464002560

約数和(自身を除く): 207259905

約数列:

[1, 3, 5, 13, 15, 29, 39, 65, 83, 87, 145, 195, 249, 377, 415, 435, 547, 1079, 1131, 1245, 1641, 1885, 2407, 2735, 3237, 5395, 5655, 7111, 7221, 8205, 12035, 15863, 16185, 21333, 31291, 35555, 36105, 45401, 47589, 79315, 93873, 106665, 136203, 156455, 206219, 227005, 237945, 469365, 590213, 618657, 681015, 1031095, 1316629, 1770639, 2951065, 3093285, 3949887, 6583145, 8853195, 17116177, 19749435, 51348531, 85580885, 256742655]

約数ペア:

[(1, 256742655), (3, 85580885), (5, 51348531), (13, 19749435), (15, 17116177), (29, 8853195), (39, 6583145), (65, 3949887), (83, 3093285), (87, 2951065), (145, 1770639), (195, 1316629), (249, 1031095), (377, 681015), (415, 618657), (435, 590213), (547, 469365), (1079, 237945), (1131, 227005), (1245, 206219), (1641, 156455), (1885, 136203), (2407, 106665), (2735, 93873), (3237, 79315), (5395, 47589), (5655, 45401), (7111, 36105), (7221, 35555), (8205, 31291), (12035, 21333), (15863, 16185)]