20724535

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{97}}^1\times {\mathrm{173}}^1$

素因数の和:307

約数の個数: 32

約数和(自身を含む): 28647360

約数和(自身を除く): 7922825

約数列:

[1, 5, 13, 19, 65, 95, 97, 173, 247, 485, 865, 1235, 1261, 1843, 2249, 3287, 6305, 9215, 11245, 16435, 16781, 23959, 42731, 83905, 119795, 213655, 218153, 318839, 1090765, 1594195, 4144907, 20724535]

約数ペア:

[(1, 20724535), (5, 4144907), (13, 1594195), (19, 1090765), (65, 318839), (95, 218153), (97, 213655), (173, 119795), (247, 83905), (485, 42731), (865, 23959), (1235, 16781), (1261, 16435), (1843, 11245), (2249, 9215), (3287, 6305)]