9887654375

素因数分解:

$5^4\times {\mathrm{47}}^1\times {\mathrm{463}}^1\times {\mathrm{727}}^1$

素因数の和:1257

約数の個数: 40

約数和(自身を含む): 12663146496

約数和(自身を除く): 2775492121

約数列:

[1, 5, 25, 47, 125, 235, 463, 625, 727, 1175, 2315, 3635, 5875, 11575, 18175, 21761, 29375, 34169, 57875, 90875, 108805, 170845, 289375, 336601, 454375, 544025, 854225, 1683005, 2720125, 4271125, 8415025, 13600625, 15820247, 21355625, 42075125, 79101235, 210375625, 395506175, 1977530875, 9887654375]

約数ペア:

[(1, 9887654375), (5, 1977530875), (25, 395506175), (47, 210375625), (125, 79101235), (235, 42075125), (463, 21355625), (625, 15820247), (727, 13600625), (1175, 8415025), (2315, 4271125), (3635, 2720125), (5875, 1683005), (11575, 854225), (18175, 544025), (21761, 454375), (29375, 336601), (34169, 289375), (57875, 170845), (90875, 108805)]