15420140

素因数分解:

$2^2\times 5^1\times {\mathrm{89}}^1\times {\mathrm{8663}}^1$

素因数の和:8761

約数の個数: 24

約数和(自身を含む): 32749920

約数和(自身を除く): 17329780

約数列:

[1, 2, 4, 5, 10, 20, 89, 178, 356, 445, 890, 1780, 8663, 17326, 34652, 43315, 86630, 173260, 771007, 1542014, 3084028, 3855035, 7710070, 15420140]

約数ペア:

[(1, 15420140), (2, 7710070), (4, 3855035), (5, 3084028), (10, 1542014), (20, 771007), (89, 173260), (178, 86630), (356, 43315), (445, 34652), (890, 17326), (1780, 8663)]