398170280

素因数分解:

$2^3\times 5^1\times {\mathrm{67}}^1\times {\mathrm{101}}^1\times {\mathrm{1471}}^1$

素因数の和:1650

約数の個数: 64

約数和(自身を含む): 918881280

約数和(自身を除く): 520711000

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 67, 101, 134, 202, 268, 335, 404, 505, 536, 670, 808, 1010, 1340, 1471, 2020, 2680, 2942, 4040, 5884, 6767, 7355, 11768, 13534, 14710, 27068, 29420, 33835, 54136, 58840, 67670, 98557, 135340, 148571, 197114, 270680, 297142, 394228, 492785, 594284, 742855, 788456, 985570, 1188568, 1485710, 1971140, 2971420, 3942280, 5942840, 9954257, 19908514, 39817028, 49771285, 79634056, 99542570, 199085140, 398170280]

約数ペア:

[(1, 398170280), (2, 199085140), (4, 99542570), (5, 79634056), (8, 49771285), (10, 39817028), (20, 19908514), (40, 9954257), (67, 5942840), (101, 3942280), (134, 2971420), (202, 1971140), (268, 1485710), (335, 1188568), (404, 985570), (505, 788456), (536, 742855), (670, 594284), (808, 492785), (1010, 394228), (1340, 297142), (1471, 270680), (2020, 197114), (2680, 148571), (2942, 135340), (4040, 98557), (5884, 67670), (6767, 58840), (7355, 54136), (11768, 33835), (13534, 29420), (14710, 27068)]