20653655

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{29}}^1\times {\mathrm{563}}^1$

素因数の和:631

約数の個数: 32

約数和(自身を含む): 29237760

約数和(自身を除く): 8584105

約数列:

[1, 5, 11, 23, 29, 55, 115, 145, 253, 319, 563, 667, 1265, 1595, 2815, 3335, 6193, 7337, 12949, 16327, 30965, 36685, 64745, 81635, 142439, 179597, 375521, 712195, 897985, 1877605, 4130731, 20653655]

約数ペア:

[(1, 20653655), (5, 4130731), (11, 1877605), (23, 897985), (29, 712195), (55, 375521), (115, 179597), (145, 142439), (253, 81635), (319, 64745), (563, 36685), (667, 30965), (1265, 16327), (1595, 12949), (2815, 7337), (3335, 6193)]