20871390

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{89}}^1\times {\mathrm{7817}}^1$

素因数の和:7916

約数の個数: 32

約数和(自身を含む): 50660640

約数和(自身を除く): 29789250

約数列:

[1, 2, 3, 5, 6, 10, 15, 30, 89, 178, 267, 445, 534, 890, 1335, 2670, 7817, 15634, 23451, 39085, 46902, 78170, 117255, 234510, 695713, 1391426, 2087139, 3478565, 4174278, 6957130, 10435695, 20871390]

約数ペア:

[(1, 20871390), (2, 10435695), (3, 6957130), (5, 4174278), (6, 3478565), (10, 2087139), (15, 1391426), (30, 695713), (89, 234510), (178, 117255), (267, 78170), (445, 46902), (534, 39085), (890, 23451), (1335, 15634), (2670, 7817)]