21002640

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{87511}}^1$

素因数の和:87527

約数の個数: 40

約数和(自身を含む): 65108928

約数和(自身を除く): 44106288

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 40, 48, 60, 80, 120, 240, 87511, 175022, 262533, 350044, 437555, 525066, 700088, 875110, 1050132, 1312665, 1400176, 1750220, 2100264, 2625330, 3500440, 4200528, 5250660, 7000880, 10501320, 21002640]

約数ペア:

[(1, 21002640), (2, 10501320), (3, 7000880), (4, 5250660), (5, 4200528), (6, 3500440), (8, 2625330), (10, 2100264), (12, 1750220), (15, 1400176), (16, 1312665), (20, 1050132), (24, 875110), (30, 700088), (40, 525066), (48, 437555), (60, 350044), (80, 262533), (120, 175022), (240, 87511)]