20876560

素因数分解:

$2^4\times 5^1\times {\mathrm{59}}^1\times {\mathrm{4423}}^1$

素因数の和:4495

約数の個数: 40

約数和(自身を含む): 49371840

約数和(自身を除く): 28495280

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 59, 80, 118, 236, 295, 472, 590, 944, 1180, 2360, 4423, 4720, 8846, 17692, 22115, 35384, 44230, 70768, 88460, 176920, 260957, 353840, 521914, 1043828, 1304785, 2087656, 2609570, 4175312, 5219140, 10438280, 20876560]

約数ペア:

[(1, 20876560), (2, 10438280), (4, 5219140), (5, 4175312), (8, 2609570), (10, 2087656), (16, 1304785), (20, 1043828), (40, 521914), (59, 353840), (80, 260957), (118, 176920), (236, 88460), (295, 70768), (472, 44230), (590, 35384), (944, 22115), (1180, 17692), (2360, 8846), (4423, 4720)]