21053945

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{313}}^1\times {\mathrm{1223}}^1$

素因数の和:1552

約数の個数: 16

約数和(自身を含む): 27672192

約数和(自身を除く): 6618247

約数列:

[1, 5, 11, 55, 313, 1223, 1565, 3443, 6115, 13453, 17215, 67265, 382799, 1913995, 4210789, 21053945]

約数ペア:

[(1, 21053945), (5, 4210789), (11, 1913995), (55, 382799), (313, 67265), (1223, 17215), (1565, 13453), (3443, 6115)]