86689375

素因数分解:

$5^4\times {\mathrm{17}}^1\times {\mathrm{41}}^1\times {\mathrm{199}}^1$

素因数の和:277

約数の個数: 40

約数和(自身を含む): 118087200

約数和(自身を除く): 31397825

約数列:

[1, 5, 17, 25, 41, 85, 125, 199, 205, 425, 625, 697, 995, 1025, 2125, 3383, 3485, 4975, 5125, 8159, 10625, 16915, 17425, 24875, 25625, 40795, 84575, 87125, 124375, 138703, 203975, 422875, 435625, 693515, 1019875, 2114375, 3467575, 5099375, 17337875, 86689375]

約数ペア:

[(1, 86689375), (5, 17337875), (17, 5099375), (25, 3467575), (41, 2114375), (85, 1019875), (125, 693515), (199, 435625), (205, 422875), (425, 203975), (625, 138703), (697, 124375), (995, 87125), (1025, 84575), (2125, 40795), (3383, 25625), (3485, 24875), (4975, 17425), (5125, 16915), (8159, 10625)]