1491490040

素因数分解:

$2^3\times 5^1\times {\mathrm{557}}^1\times {\mathrm{66943}}^1$

素因数の和:67511

約数の個数: 32

約数和(自身を含む): 3361927680

約数和(自身を除く): 1870437640

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 557, 1114, 2228, 2785, 4456, 5570, 11140, 22280, 66943, 133886, 267772, 334715, 535544, 669430, 1338860, 2677720, 37287251, 74574502, 149149004, 186436255, 298298008, 372872510, 745745020, 1491490040]

約数ペア:

[(1, 1491490040), (2, 745745020), (4, 372872510), (5, 298298008), (8, 186436255), (10, 149149004), (20, 74574502), (40, 37287251), (557, 2677720), (1114, 1338860), (2228, 669430), (2785, 535544), (4456, 334715), (5570, 267772), (11140, 133886), (22280, 66943)]