30987620

素因数分解:

$2^2\times 5^1\times {\mathrm{97}}^1\times {\mathrm{15973}}^1$

素因数の和:16079

約数の個数: 24

約数和(自身を含む): 65748984

約数和(自身を除く): 34761364

約数列:

[1, 2, 4, 5, 10, 20, 97, 194, 388, 485, 970, 1940, 15973, 31946, 63892, 79865, 159730, 319460, 1549381, 3098762, 6197524, 7746905, 15493810, 30987620]

約数ペア:

[(1, 30987620), (2, 15493810), (4, 7746905), (5, 6197524), (10, 3098762), (20, 1549381), (97, 319460), (194, 159730), (388, 79865), (485, 63892), (970, 31946), (1940, 15973)]