77680880

素因数分解:

$2^4\times 5^1\times {\mathrm{653}}^1\times {\mathrm{1487}}^1$

素因数の和:2153

約数の個数: 40

約数和(自身を含む): 181006272

約数和(自身を除く): 103325392

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 653, 1306, 1487, 2612, 2974, 3265, 5224, 5948, 6530, 7435, 10448, 11896, 13060, 14870, 23792, 26120, 29740, 52240, 59480, 118960, 971011, 1942022, 3884044, 4855055, 7768088, 9710110, 15536176, 19420220, 38840440, 77680880]

約数ペア:

[(1, 77680880), (2, 38840440), (4, 19420220), (5, 15536176), (8, 9710110), (10, 7768088), (16, 4855055), (20, 3884044), (40, 1942022), (80, 971011), (653, 118960), (1306, 59480), (1487, 52240), (2612, 29740), (2974, 26120), (3265, 23792), (5224, 14870), (5948, 13060), (6530, 11896), (7435, 10448)]