81030760

素因数分解:

$2^3\times 5^1\times {\mathrm{41}}^1\times {\mathrm{49409}}^1$

素因数の和:49461

約数の個数: 32

約数和(自身を含む): 186769800

約数和(自身を除く): 105739040

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 41, 82, 164, 205, 328, 410, 820, 1640, 49409, 98818, 197636, 247045, 395272, 494090, 988180, 1976360, 2025769, 4051538, 8103076, 10128845, 16206152, 20257690, 40515380, 81030760]

約数ペア:

[(1, 81030760), (2, 40515380), (4, 20257690), (5, 16206152), (8, 10128845), (10, 8103076), (20, 4051538), (40, 2025769), (41, 1976360), (82, 988180), (164, 494090), (205, 395272), (328, 247045), (410, 197636), (820, 98818), (1640, 49409)]