28491585

素因数分解:

$3^1\times 5^1\times {\mathrm{43}}^1\times {\mathrm{163}}^1\times {\mathrm{271}}^1$

素因数の和:485

約数の個数: 32

約数和(自身を含む): 47106048

約数和(自身を除く): 18614463

約数列:

[1, 3, 5, 15, 43, 129, 163, 215, 271, 489, 645, 813, 815, 1355, 2445, 4065, 7009, 11653, 21027, 34959, 35045, 44173, 58265, 105135, 132519, 174795, 220865, 662595, 1899439, 5698317, 9497195, 28491585]

約数ペア:

[(1, 28491585), (3, 9497195), (5, 5698317), (15, 1899439), (43, 662595), (129, 220865), (163, 174795), (215, 132519), (271, 105135), (489, 58265), (645, 44173), (813, 35045), (815, 34959), (1355, 21027), (2445, 11653), (4065, 7009)]