21988891442

素因数分解:

$2^1\times 7^1\times {\mathrm{79}}^1\times {\mathrm{19881457}}^1$

素因数の和:19881545

約数の個数: 16

約数和(自身を含む): 38172399360

約数和(自身を除く): 16183507918

約数列:

[1, 2, 7, 14, 79, 158, 553, 1106, 19881457, 39762914, 139170199, 278340398, 1570635103, 3141270206, 10994445721, 21988891442]

約数ペア:

[(1, 21988891442), (2, 10994445721), (7, 3141270206), (14, 1570635103), (79, 278340398), (158, 139170199), (553, 39762914), (1106, 19881457)]