21398210

素因数分解:

$2^1\times 5^1\times {\mathrm{37}}^1\times {\mathrm{151}}^1\times {\mathrm{383}}^1$

素因数の和:578

約数の個数: 32

約数和(自身を含む): 39923712

約数和(自身を除く): 18525502

約数列:

[1, 2, 5, 10, 37, 74, 151, 185, 302, 370, 383, 755, 766, 1510, 1915, 3830, 5587, 11174, 14171, 27935, 28342, 55870, 57833, 70855, 115666, 141710, 289165, 578330, 2139821, 4279642, 10699105, 21398210]

約数ペア:

[(1, 21398210), (2, 10699105), (5, 4279642), (10, 2139821), (37, 578330), (74, 289165), (151, 141710), (185, 115666), (302, 70855), (370, 57833), (383, 55870), (755, 28342), (766, 27935), (1510, 14171), (1915, 11174), (3830, 5587)]