20409645

素因数分解:

$3^1\times 5^1\times {\mathrm{991}}^1\times {\mathrm{1373}}^1$

素因数の和:2372

約数の個数: 16

約数和(自身を含む): 32712192

約数和(自身を除く): 12302547

約数列:

[1, 3, 5, 15, 991, 1373, 2973, 4119, 4955, 6865, 14865, 20595, 1360643, 4081929, 6803215, 20409645]

約数ペア:

[(1, 20409645), (3, 6803215), (5, 4081929), (15, 1360643), (991, 20595), (1373, 14865), (2973, 6865), (4119, 4955)]