201660875

素因数分解:

$5^3\times {\mathrm{13}}^1\times {\mathrm{193}}^1\times {\mathrm{643}}^1$

素因数の和:864

約数の個数: 32

約数和(自身を含む): 272860224

約数和(自身を除く): 71199349

約数列:

[1, 5, 13, 25, 65, 125, 193, 325, 643, 965, 1625, 2509, 3215, 4825, 8359, 12545, 16075, 24125, 41795, 62725, 80375, 124099, 208975, 313625, 620495, 1044875, 1613287, 3102475, 8066435, 15512375, 40332175, 201660875]

約数ペア:

[(1, 201660875), (5, 40332175), (13, 15512375), (25, 8066435), (65, 3102475), (125, 1613287), (193, 1044875), (325, 620495), (643, 313625), (965, 208975), (1625, 124099), (2509, 80375), (3215, 62725), (4825, 41795), (8359, 24125), (12545, 16075)]