21539110

素因数分解:

$2^1\times 5^1\times {\mathrm{31}}^1\times {\mathrm{69481}}^1$

素因数の和:69519

約数の個数: 16

約数和(自身を含む): 40021632

約数和(自身を除く): 18482522

約数列:

[1, 2, 5, 10, 31, 62, 155, 310, 69481, 138962, 347405, 694810, 2153911, 4307822, 10769555, 21539110]

約数ペア:

[(1, 21539110), (2, 10769555), (5, 4307822), (10, 2153911), (31, 694810), (62, 347405), (155, 138962), (310, 69481)]