20213860

素因数分解:

$2^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{32603}}^1$

素因数の和:32643

約数の個数: 24

約数和(自身を含む): 43819776

約数和(自身を除く): 23605916

約数列:

[1, 2, 4, 5, 10, 20, 31, 62, 124, 155, 310, 620, 32603, 65206, 130412, 163015, 326030, 652060, 1010693, 2021386, 4042772, 5053465, 10106930, 20213860]

約数ペア:

[(1, 20213860), (2, 10106930), (4, 5053465), (5, 4042772), (10, 2021386), (20, 1010693), (31, 652060), (62, 326030), (124, 163015), (155, 130412), (310, 65206), (620, 32603)]