21108100

素因数分解:

$2^2\times 5^2\times {\mathrm{13}}^2\times {\mathrm{1249}}^1$

素因数の和:1289

約数の個数: 54

約数和(自身を含む): 49638750

約数和(自身を除く): 28530650

約数列:

[1, 2, 4, 5, 10, 13, 20, 25, 26, 50, 52, 65, 100, 130, 169, 260, 325, 338, 650, 676, 845, 1249, 1300, 1690, 2498, 3380, 4225, 4996, 6245, 8450, 12490, 16237, 16900, 24980, 31225, 32474, 62450, 64948, 81185, 124900, 162370, 211081, 324740, 405925, 422162, 811850, 844324, 1055405, 1623700, 2110810, 4221620, 5277025, 10554050, 21108100]

約数ペア:

[(1, 21108100), (2, 10554050), (4, 5277025), (5, 4221620), (10, 2110810), (13, 1623700), (20, 1055405), (25, 844324), (26, 811850), (50, 422162), (52, 405925), (65, 324740), (100, 211081), (130, 162370), (169, 124900), (260, 81185), (325, 64948), (338, 62450), (650, 32474), (676, 31225), (845, 24980), (1249, 16900), (1300, 16237), (1690, 12490), (2498, 8450), (3380, 6245), (4225, 4996)]