38948180

素因数分解:

$2^2\times 5^1\times {\mathrm{89}}^1\times {\mathrm{21881}}^1$

素因数の和:21979

約数の個数: 24

約数和(自身を含む): 82713960

約数和(自身を除く): 43765780

約数列:

[1, 2, 4, 5, 10, 20, 89, 178, 356, 445, 890, 1780, 21881, 43762, 87524, 109405, 218810, 437620, 1947409, 3894818, 7789636, 9737045, 19474090, 38948180]

約数ペア:

[(1, 38948180), (2, 19474090), (4, 9737045), (5, 7789636), (10, 3894818), (20, 1947409), (89, 437620), (178, 218810), (356, 109405), (445, 87524), (890, 43762), (1780, 21881)]