21996760

素因数分解:

$2^3\times 5^1\times {\mathrm{79}}^1\times {\mathrm{6961}}^1$

素因数の和:7051

約数の個数: 32

約数和(自身を含む): 50126400

約数和(自身を除く): 28129640

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 79, 158, 316, 395, 632, 790, 1580, 3160, 6961, 13922, 27844, 34805, 55688, 69610, 139220, 278440, 549919, 1099838, 2199676, 2749595, 4399352, 5499190, 10998380, 21996760]

約数ペア:

[(1, 21996760), (2, 10998380), (4, 5499190), (5, 4399352), (8, 2749595), (10, 2199676), (20, 1099838), (40, 549919), (79, 278440), (158, 139220), (316, 69610), (395, 55688), (632, 34805), (790, 27844), (1580, 13922), (3160, 6961)]