18503875

素因数分解:

$5^3\times {\mathrm{13}}^1\times {\mathrm{59}}^1\times {\mathrm{193}}^1$

素因数の和:280

約数の個数: 32

約数和(自身を含む): 25421760

約数和(自身を除く): 6917885

約数列:

[1, 5, 13, 25, 59, 65, 125, 193, 295, 325, 767, 965, 1475, 1625, 2509, 3835, 4825, 7375, 11387, 12545, 19175, 24125, 56935, 62725, 95875, 148031, 284675, 313625, 740155, 1423375, 3700775, 18503875]

約数ペア:

[(1, 18503875), (5, 3700775), (13, 1423375), (25, 740155), (59, 313625), (65, 284675), (125, 148031), (193, 95875), (295, 62725), (325, 56935), (767, 24125), (965, 19175), (1475, 12545), (1625, 11387), (2509, 7375), (3835, 4825)]