21998408

素因数分解:

$2^3\times {\mathrm{17}}^1\times {\mathrm{161753}}^1$

素因数の和:161776

約数の個数: 16

約数和(自身を含む): 43673580

約数和(自身を除く): 21675172

約数列:

[1, 2, 4, 8, 17, 34, 68, 136, 161753, 323506, 647012, 1294024, 2749801, 5499602, 10999204, 21998408]

約数ペア:

[(1, 21998408), (2, 10999204), (4, 5499602), (8, 2749801), (17, 1294024), (34, 647012), (68, 323506), (136, 161753)]