128575120

素因数分解:

$2^4\times 5^1\times {\mathrm{859}}^1\times {\mathrm{1871}}^1$

素因数の和:2743

約数の個数: 40

約数和(自身を含む): 299445120

約数和(自身を除く): 170870000

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 859, 1718, 1871, 3436, 3742, 4295, 6872, 7484, 8590, 9355, 13744, 14968, 17180, 18710, 29936, 34360, 37420, 68720, 74840, 149680, 1607189, 3214378, 6428756, 8035945, 12857512, 16071890, 25715024, 32143780, 64287560, 128575120]

約数ペア:

[(1, 128575120), (2, 64287560), (4, 32143780), (5, 25715024), (8, 16071890), (10, 12857512), (16, 8035945), (20, 6428756), (40, 3214378), (80, 1607189), (859, 149680), (1718, 74840), (1871, 68720), (3436, 37420), (3742, 34360), (4295, 29936), (6872, 18710), (7484, 17180), (8590, 14968), (9355, 13744)]