28251585

素因数分解:

$3^4\times 5^1\times {\mathrm{79}}^1\times {\mathrm{883}}^1$

素因数の和:979

約数の個数: 40

約数和(自身を含む): 51342720

約数和(自身を除く): 23091135

約数列:

[1, 3, 5, 9, 15, 27, 45, 79, 81, 135, 237, 395, 405, 711, 883, 1185, 2133, 2649, 3555, 4415, 6399, 7947, 10665, 13245, 23841, 31995, 39735, 69757, 71523, 119205, 209271, 348785, 357615, 627813, 1046355, 1883439, 3139065, 5650317, 9417195, 28251585]

約数ペア:

[(1, 28251585), (3, 9417195), (5, 5650317), (9, 3139065), (15, 1883439), (27, 1046355), (45, 627813), (79, 357615), (81, 348785), (135, 209271), (237, 119205), (395, 71523), (405, 69757), (711, 39735), (883, 31995), (1185, 23841), (2133, 13245), (2649, 10665), (3555, 7947), (4415, 6399)]