21538612

素因数分解:

$2^2\times {\mathrm{41}}^1\times {\mathrm{61}}^1\times {\mathrm{2153}}^1$

素因数の和:2259

約数の個数: 24

約数和(自身を含む): 39263112

約数和(自身を除く): 17724500

約数列:

[1, 2, 4, 41, 61, 82, 122, 164, 244, 2153, 2501, 4306, 5002, 8612, 10004, 88273, 131333, 176546, 262666, 353092, 525332, 5384653, 10769306, 21538612]

約数ペア:

[(1, 21538612), (2, 10769306), (4, 5384653), (41, 525332), (61, 353092), (82, 262666), (122, 176546), (164, 131333), (244, 88273), (2153, 10004), (2501, 8612), (4306, 5002)]