639564580

素因数分解:

$2^2\times 5^1\times {\mathrm{67}}^1\times {\mathrm{449}}^1\times {\mathrm{1063}}^1$

素因数の和:1588

約数の個数: 48

約数和(自身を含む): 1367452800

約数和(自身を除く): 727888220

約数列:

[1, 2, 4, 5, 10, 20, 67, 134, 268, 335, 449, 670, 898, 1063, 1340, 1796, 2126, 2245, 4252, 4490, 5315, 8980, 10630, 21260, 30083, 60166, 71221, 120332, 142442, 150415, 284884, 300830, 356105, 477287, 601660, 712210, 954574, 1424420, 1909148, 2386435, 4772870, 9545740, 31978229, 63956458, 127912916, 159891145, 319782290, 639564580]

約数ペア:

[(1, 639564580), (2, 319782290), (4, 159891145), (5, 127912916), (10, 63956458), (20, 31978229), (67, 9545740), (134, 4772870), (268, 2386435), (335, 1909148), (449, 1424420), (670, 954574), (898, 712210), (1063, 601660), (1340, 477287), (1796, 356105), (2126, 300830), (2245, 284884), (4252, 150415), (4490, 142442), (5315, 120332), (8980, 71221), (10630, 60166), (21260, 30083)]