20997410

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{79}}^1\times {\mathrm{3797}}^1$

素因数の和:3890

約数の個数: 32

約数和(自身を含む): 43752960

約数和(自身を除く): 22755550

約数列:

[1, 2, 5, 7, 10, 14, 35, 70, 79, 158, 395, 553, 790, 1106, 2765, 3797, 5530, 7594, 18985, 26579, 37970, 53158, 132895, 265790, 299963, 599926, 1499815, 2099741, 2999630, 4199482, 10498705, 20997410]

約数ペア:

[(1, 20997410), (2, 10498705), (5, 4199482), (7, 2999630), (10, 2099741), (14, 1499815), (35, 599926), (70, 299963), (79, 265790), (158, 132895), (395, 53158), (553, 37970), (790, 26579), (1106, 18985), (2765, 7594), (3797, 5530)]