21865818

素因数分解:

$2^1\times 3^1\times {\mathrm{13}}^1\times {\mathrm{197}}^1\times {\mathrm{1423}}^1$

素因数の和:1638

約数の個数: 32

約数和(自身を含む): 47367936

約数和(自身を除く): 25502118

約数列:

[1, 2, 3, 6, 13, 26, 39, 78, 197, 394, 591, 1182, 1423, 2561, 2846, 4269, 5122, 7683, 8538, 15366, 18499, 36998, 55497, 110994, 280331, 560662, 840993, 1681986, 3644303, 7288606, 10932909, 21865818]

約数ペア:

[(1, 21865818), (2, 10932909), (3, 7288606), (6, 3644303), (13, 1681986), (26, 840993), (39, 560662), (78, 280331), (197, 110994), (394, 55497), (591, 36998), (1182, 18499), (1423, 15366), (2561, 8538), (2846, 7683), (4269, 5122)]