21017685

素因数分解:

$3^1\times 5^1\times {\mathrm{13}}^2\times {\mathrm{8291}}^1$

素因数の和:8325

約数の個数: 24

約数和(自身を含む): 36418464

約数和(自身を除く): 15400779

約数列:

[1, 3, 5, 13, 15, 39, 65, 169, 195, 507, 845, 2535, 8291, 24873, 41455, 107783, 124365, 323349, 538915, 1401179, 1616745, 4203537, 7005895, 21017685]

約数ペア:

[(1, 21017685), (3, 7005895), (5, 4203537), (13, 1616745), (15, 1401179), (39, 538915), (65, 323349), (169, 124365), (195, 107783), (507, 41455), (845, 24873), (2535, 8291)]