256474140

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{328813}}^1$

素因数の和:328838

約数の個数: 48

約数和(自身を含む): 773370528

約数和(自身を除く): 516896388

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 13, 15, 20, 26, 30, 39, 52, 60, 65, 78, 130, 156, 195, 260, 390, 780, 328813, 657626, 986439, 1315252, 1644065, 1972878, 3288130, 3945756, 4274569, 4932195, 6576260, 8549138, 9864390, 12823707, 17098276, 19728780, 21372845, 25647414, 42745690, 51294828, 64118535, 85491380, 128237070, 256474140]

約数ペア:

[(1, 256474140), (2, 128237070), (3, 85491380), (4, 64118535), (5, 51294828), (6, 42745690), (10, 25647414), (12, 21372845), (13, 19728780), (15, 17098276), (20, 12823707), (26, 9864390), (30, 8549138), (39, 6576260), (52, 4932195), (60, 4274569), (65, 3945756), (78, 3288130), (130, 1972878), (156, 1644065), (195, 1315252), (260, 986439), (390, 657626), (780, 328813)]