20634860

素因数分解:

$2^2\times 5^1\times {\mathrm{509}}^1\times {\mathrm{2027}}^1$

素因数の和:2545

約数の個数: 24

約数和(自身を含む): 43439760

約数和(自身を除く): 22804900

約数列:

[1, 2, 4, 5, 10, 20, 509, 1018, 2027, 2036, 2545, 4054, 5090, 8108, 10135, 10180, 20270, 40540, 1031743, 2063486, 4126972, 5158715, 10317430, 20634860]

約数ペア:

[(1, 20634860), (2, 10317430), (4, 5158715), (5, 4126972), (10, 2063486), (20, 1031743), (509, 40540), (1018, 20270), (2027, 10180), (2036, 10135), (2545, 8108), (4054, 5090)]