15965625

素因数分解:

$3^1\times 5^5\times {\mathrm{13}}^1\times {\mathrm{131}}^1$

素因数の和:172

約数の個数: 48

約数和(自身を含む): 28873152

約数和(自身を除く): 12907527

約数列:

[1, 3, 5, 13, 15, 25, 39, 65, 75, 125, 131, 195, 325, 375, 393, 625, 655, 975, 1625, 1703, 1875, 1965, 3125, 3275, 4875, 5109, 8125, 8515, 9375, 9825, 16375, 24375, 25545, 40625, 42575, 49125, 81875, 121875, 127725, 212875, 245625, 409375, 638625, 1064375, 1228125, 3193125, 5321875, 15965625]

約数ペア:

[(1, 15965625), (3, 5321875), (5, 3193125), (13, 1228125), (15, 1064375), (25, 638625), (39, 409375), (65, 245625), (75, 212875), (125, 127725), (131, 121875), (195, 81875), (325, 49125), (375, 42575), (393, 40625), (625, 25545), (655, 24375), (975, 16375), (1625, 9825), (1703, 9375), (1875, 8515), (1965, 8125), (3125, 5109), (3275, 4875)]