28663375

素因数分解:

$5^3\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{569}}^1$

素因数の和:628

約数の個数: 32

約数和(自身を含む): 39836160

約数和(自身を除く): 11172785

約数列:

[1, 5, 13, 25, 31, 65, 125, 155, 325, 403, 569, 775, 1625, 2015, 2845, 3875, 7397, 10075, 14225, 17639, 36985, 50375, 71125, 88195, 184925, 229307, 440975, 924625, 1146535, 2204875, 5732675, 28663375]

約数ペア:

[(1, 28663375), (5, 5732675), (13, 2204875), (25, 1146535), (31, 924625), (65, 440975), (125, 229307), (155, 184925), (325, 88195), (403, 71125), (569, 50375), (775, 36985), (1625, 17639), (2015, 14225), (2845, 10075), (3875, 7397)]