20313320

素因数分解:

$2^3\times 5^1\times {\mathrm{523}}^1\times {\mathrm{971}}^1$

素因数の和:1505

約数の個数: 32

約数和(自身を含む): 45839520

約数和(自身を除く): 25526200

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 523, 971, 1046, 1942, 2092, 2615, 3884, 4184, 4855, 5230, 7768, 9710, 10460, 19420, 20920, 38840, 507833, 1015666, 2031332, 2539165, 4062664, 5078330, 10156660, 20313320]

約数ペア:

[(1, 20313320), (2, 10156660), (4, 5078330), (5, 4062664), (8, 2539165), (10, 2031332), (20, 1015666), (40, 507833), (523, 38840), (971, 20920), (1046, 19420), (1942, 10460), (2092, 9710), (2615, 7768), (3884, 5230), (4184, 4855)]