81204920

素因数分解:

$2^3\times 5^1\times {\mathrm{17}}^1\times {\mathrm{119419}}^1$

素因数の和:119447

約数の個数: 32

約数和(自身を含む): 193460400

約数和(自身を除く): 112255480

約数列:

[1, 2, 4, 5, 8, 10, 17, 20, 34, 40, 68, 85, 136, 170, 340, 680, 119419, 238838, 477676, 597095, 955352, 1194190, 2030123, 2388380, 4060246, 4776760, 8120492, 10150615, 16240984, 20301230, 40602460, 81204920]

約数ペア:

[(1, 81204920), (2, 40602460), (4, 20301230), (5, 16240984), (8, 10150615), (10, 8120492), (17, 4776760), (20, 4060246), (34, 2388380), (40, 2030123), (68, 1194190), (85, 955352), (136, 597095), (170, 477676), (340, 238838), (680, 119419)]