21254810

素因数分解:

$2^1\times 5^1\times {\mathrm{41}}^1\times {\mathrm{47}}^1\times {\mathrm{1103}}^1$

素因数の和:1198

約数の個数: 32

約数和(自身を含む): 40061952

約数和(自身を除く): 18807142

約数列:

[1, 2, 5, 10, 41, 47, 82, 94, 205, 235, 410, 470, 1103, 1927, 2206, 3854, 5515, 9635, 11030, 19270, 45223, 51841, 90446, 103682, 226115, 259205, 452230, 518410, 2125481, 4250962, 10627405, 21254810]

約数ペア:

[(1, 21254810), (2, 10627405), (5, 4250962), (10, 2125481), (41, 518410), (47, 452230), (82, 259205), (94, 226115), (205, 103682), (235, 90446), (410, 51841), (470, 45223), (1103, 19270), (1927, 11030), (2206, 9635), (3854, 5515)]