28261420

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{128461}}^1$

素因数の和:128481

約数の個数: 24

約数和(自身を含む): 64744848

約数和(自身を除く): 36483428

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 220, 128461, 256922, 513844, 642305, 1284610, 1413071, 2569220, 2826142, 5652284, 7065355, 14130710, 28261420]

約数ペア:

[(1, 28261420), (2, 14130710), (4, 7065355), (5, 5652284), (10, 2826142), (11, 2569220), (20, 1413071), (22, 1284610), (44, 642305), (55, 513844), (110, 256922), (220, 128461)]