256419080

素因数分解:

$2^3\times 5^1\times {\mathrm{107}}^1\times {\mathrm{181}}^1\times {\mathrm{331}}^1$

素因数の和:630

約数の個数: 64

約数和(自身を含む): 587321280

約数和(自身を除く): 330902200

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 107, 181, 214, 331, 362, 428, 535, 662, 724, 856, 905, 1070, 1324, 1448, 1655, 1810, 2140, 2648, 3310, 3620, 4280, 6620, 7240, 13240, 19367, 35417, 38734, 59911, 70834, 77468, 96835, 119822, 141668, 154936, 177085, 193670, 239644, 283336, 299555, 354170, 387340, 479288, 599110, 708340, 774680, 1198220, 1416680, 2396440, 6410477, 12820954, 25641908, 32052385, 51283816, 64104770, 128209540, 256419080]

約数ペア:

[(1, 256419080), (2, 128209540), (4, 64104770), (5, 51283816), (8, 32052385), (10, 25641908), (20, 12820954), (40, 6410477), (107, 2396440), (181, 1416680), (214, 1198220), (331, 774680), (362, 708340), (428, 599110), (535, 479288), (662, 387340), (724, 354170), (856, 299555), (905, 283336), (1070, 239644), (1324, 193670), (1448, 177085), (1655, 154936), (1810, 141668), (2140, 119822), (2648, 96835), (3310, 77468), (3620, 70834), (4280, 59911), (6620, 38734), (7240, 35417), (13240, 19367)]