81503775

素因数分解:

$3^2\times 5^2\times {\mathrm{29}}^1\times {\mathrm{12491}}^1$

素因数の和:12536

約数の個数: 36

約数和(自身を含む): 151028280

約数和(自身を除く): 69524505

約数列:

[1, 3, 5, 9, 15, 25, 29, 45, 75, 87, 145, 225, 261, 435, 725, 1305, 2175, 6525, 12491, 37473, 62455, 112419, 187365, 312275, 362239, 562095, 936825, 1086717, 1811195, 2810475, 3260151, 5433585, 9055975, 16300755, 27167925, 81503775]

約数ペア:

[(1, 81503775), (3, 27167925), (5, 16300755), (9, 9055975), (15, 5433585), (25, 3260151), (29, 2810475), (45, 1811195), (75, 1086717), (87, 936825), (145, 562095), (225, 362239), (261, 312275), (435, 187365), (725, 112419), (1305, 62455), (2175, 37473), (6525, 12491)]