255814520

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{491951}}^1$

素因数の和:491975

約数の個数: 32

約数和(自身を含む): 619859520

約数和(自身を除く): 364045000

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 260, 520, 491951, 983902, 1967804, 2459755, 3935608, 4919510, 6395363, 9839020, 12790726, 19678040, 25581452, 31976815, 51162904, 63953630, 127907260, 255814520]

約数ペア:

[(1, 255814520), (2, 127907260), (4, 63953630), (5, 51162904), (8, 31976815), (10, 25581452), (13, 19678040), (20, 12790726), (26, 9839020), (40, 6395363), (52, 4919510), (65, 3935608), (104, 2459755), (130, 1967804), (260, 983902), (520, 491951)]