8286920

素因数分解:

$2^3\times 5^1\times {\mathrm{31}}^1\times {\mathrm{41}}^1\times {\mathrm{163}}^1$

素因数の和:246

約数の個数: 64

約数和(自身を含む): 19837440

約数和(自身を除く): 11550520

約数列:

[1, 2, 4, 5, 8, 10, 20, 31, 40, 41, 62, 82, 124, 155, 163, 164, 205, 248, 310, 326, 328, 410, 620, 652, 815, 820, 1240, 1271, 1304, 1630, 1640, 2542, 3260, 5053, 5084, 6355, 6520, 6683, 10106, 10168, 12710, 13366, 20212, 25265, 25420, 26732, 33415, 40424, 50530, 50840, 53464, 66830, 101060, 133660, 202120, 207173, 267320, 414346, 828692, 1035865, 1657384, 2071730, 4143460, 8286920]

約数ペア:

[(1, 8286920), (2, 4143460), (4, 2071730), (5, 1657384), (8, 1035865), (10, 828692), (20, 414346), (31, 267320), (40, 207173), (41, 202120), (62, 133660), (82, 101060), (124, 66830), (155, 53464), (163, 50840), (164, 50530), (205, 40424), (248, 33415), (310, 26732), (326, 25420), (328, 25265), (410, 20212), (620, 13366), (652, 12710), (815, 10168), (820, 10106), (1240, 6683), (1271, 6520), (1304, 6355), (1630, 5084), (1640, 5053), (2542, 3260)]