21285375

素因数分解:

$3^1\times 5^3\times {\mathrm{31}}^1\times {\mathrm{1831}}^1$

素因数の和:1880

約数の個数: 32

約数和(自身を含む): 36581376

約数和(自身を除く): 15296001

約数列:

[1, 3, 5, 15, 25, 31, 75, 93, 125, 155, 375, 465, 775, 1831, 2325, 3875, 5493, 9155, 11625, 27465, 45775, 56761, 137325, 170283, 228875, 283805, 686625, 851415, 1419025, 4257075, 7095125, 21285375]

約数ペア:

[(1, 21285375), (3, 7095125), (5, 4257075), (15, 1419025), (25, 851415), (31, 686625), (75, 283805), (93, 228875), (125, 170283), (155, 137325), (375, 56761), (465, 45775), (775, 27465), (1831, 11625), (2325, 9155), (3875, 5493)]