21030910

素因数分解:

$2^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{71}}^1\times {\mathrm{1559}}^1$

素因数の和:1656

約数の個数: 32

約数和(自身を含む): 40435200

約数和(自身を除く): 19404290

約数列:

[1, 2, 5, 10, 19, 38, 71, 95, 142, 190, 355, 710, 1349, 1559, 2698, 3118, 6745, 7795, 13490, 15590, 29621, 59242, 110689, 148105, 221378, 296210, 553445, 1106890, 2103091, 4206182, 10515455, 21030910]

約数ペア:

[(1, 21030910), (2, 10515455), (5, 4206182), (10, 2103091), (19, 1106890), (38, 553445), (71, 296210), (95, 221378), (142, 148105), (190, 110689), (355, 59242), (710, 29621), (1349, 15590), (1559, 13490), (2698, 7795), (3118, 6745)]