21799640

素因数分解:

$2^3\times 5^1\times {\mathrm{181}}^1\times {\mathrm{3011}}^1$

素因数の和:3203

約数の個数: 32

約数和(自身を含む): 49336560

約数和(自身を除く): 27536920

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 181, 362, 724, 905, 1448, 1810, 3011, 3620, 6022, 7240, 12044, 15055, 24088, 30110, 60220, 120440, 544991, 1089982, 2179964, 2724955, 4359928, 5449910, 10899820, 21799640]

約数ペア:

[(1, 21799640), (2, 10899820), (4, 5449910), (5, 4359928), (8, 2724955), (10, 2179964), (20, 1089982), (40, 544991), (181, 120440), (362, 60220), (724, 30110), (905, 24088), (1448, 15055), (1810, 12044), (3011, 7240), (3620, 6022)]