21679228

素因数分解:

$2^2\times {\mathrm{19}}^1\times {\mathrm{109}}^1\times {\mathrm{2617}}^1$

素因数の和:2749

約数の個数: 24

約数和(自身を含む): 40317200

約数和(自身を除く): 18637972

約数列:

[1, 2, 4, 19, 38, 76, 109, 218, 436, 2071, 2617, 4142, 5234, 8284, 10468, 49723, 99446, 198892, 285253, 570506, 1141012, 5419807, 10839614, 21679228]

約数ペア:

[(1, 21679228), (2, 10839614), (4, 5419807), (19, 1141012), (38, 570506), (76, 285253), (109, 198892), (218, 99446), (436, 49723), (2071, 10468), (2617, 8284), (4142, 5234)]