19638171

素因数分解:

$3^2\times 7^2\times {\mathrm{44531}}^1$

素因数の和:44551

約数の個数: 18

約数和(自身を含む): 32998212

約数和(自身を除く): 13360041

約数列:

[1, 3, 7, 9, 21, 49, 63, 147, 441, 44531, 133593, 311717, 400779, 935151, 2182019, 2805453, 6546057, 19638171]

約数ペア:

[(1, 19638171), (3, 6546057), (7, 2805453), (9, 2182019), (21, 935151), (49, 400779), (63, 311717), (147, 133593), (441, 44531)]