21853993

素因数分解:

$7^1\times {\mathrm{17}}^1\times {\mathrm{67}}^1\times {\mathrm{2741}}^1$

素因数の和:2832

約数の個数: 16

約数和(自身を含む): 26849664

約数和(自身を除く): 4995671

約数列:

[1, 7, 17, 67, 119, 469, 1139, 2741, 7973, 19187, 46597, 183647, 326179, 1285529, 3121999, 21853993]

約数ペア:

[(1, 21853993), (7, 3121999), (17, 1285529), (67, 326179), (119, 183647), (469, 46597), (1139, 19187), (2741, 7973)]