81028270

素因数分解:

$2^1\times 5^1\times {\mathrm{89}}^1\times {\mathrm{181}}^1\times {\mathrm{503}}^1$

素因数の和:780

約数の個数: 32

約数和(自身を含む): 148599360

約数和(自身を除く): 67571090

約数列:

[1, 2, 5, 10, 89, 178, 181, 362, 445, 503, 890, 905, 1006, 1810, 2515, 5030, 16109, 32218, 44767, 80545, 89534, 91043, 161090, 182086, 223835, 447670, 455215, 910430, 8102827, 16205654, 40514135, 81028270]

約数ペア:

[(1, 81028270), (2, 40514135), (5, 16205654), (10, 8102827), (89, 910430), (178, 455215), (181, 447670), (362, 223835), (445, 182086), (503, 161090), (890, 91043), (905, 89534), (1006, 80545), (1810, 44767), (2515, 32218), (5030, 16109)]