20282215

素因数分解:

$5^1\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{71}}^1\times {\mathrm{97}}^1$

素因数の和:223

約数の個数: 32

約数和(自身を含む): 27095040

約数和(自身を除く): 6812825

約数列:

[1, 5, 19, 31, 71, 95, 97, 155, 355, 485, 589, 1349, 1843, 2201, 2945, 3007, 6745, 6887, 9215, 11005, 15035, 34435, 41819, 57133, 130853, 209095, 213497, 285665, 654265, 1067485, 4056443, 20282215]

約数ペア:

[(1, 20282215), (5, 4056443), (19, 1067485), (31, 654265), (71, 285665), (95, 213497), (97, 209095), (155, 130853), (355, 57133), (485, 41819), (589, 34435), (1349, 15035), (1843, 11005), (2201, 9215), (2945, 6887), (3007, 6745)]