21518812

素因数分解:

$2^2\times 7^1\times {\mathrm{29}}^1\times {\mathrm{26501}}^1$

素因数の和:26541

約数の個数: 24

約数和(自身を含む): 44523360

約数和(自身を除く): 23004548

約数列:

[1, 2, 4, 7, 14, 28, 29, 58, 116, 203, 406, 812, 26501, 53002, 106004, 185507, 371014, 742028, 768529, 1537058, 3074116, 5379703, 10759406, 21518812]

約数ペア:

[(1, 21518812), (2, 10759406), (4, 5379703), (7, 3074116), (14, 1537058), (28, 768529), (29, 742028), (58, 371014), (116, 185507), (203, 106004), (406, 53002), (812, 26501)]