1643690

素因数分解:

$2^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{41}}^1\times {\mathrm{211}}^1$

素因数の和:278

約数の個数: 32

約数和(自身を含む): 3205440

約数和(自身を除く): 1561750

約数列:

[1, 2, 5, 10, 19, 38, 41, 82, 95, 190, 205, 211, 410, 422, 779, 1055, 1558, 2110, 3895, 4009, 7790, 8018, 8651, 17302, 20045, 40090, 43255, 86510, 164369, 328738, 821845, 1643690]

約数ペア:

[(1, 1643690), (2, 821845), (5, 328738), (10, 164369), (19, 86510), (38, 43255), (41, 40090), (82, 20045), (95, 17302), (190, 8651), (205, 8018), (211, 7790), (410, 4009), (422, 3895), (779, 2110), (1055, 1558)]