20197904

素因数分解:

$2^4\times {\mathrm{17}}^1\times {\mathrm{74257}}^1$

素因数の和:74282

約数の個数: 20

約数和(自身を含む): 41435964

約数和(自身を除く): 21238060

約数列:

[1, 2, 4, 8, 16, 17, 34, 68, 136, 272, 74257, 148514, 297028, 594056, 1188112, 1262369, 2524738, 5049476, 10098952, 20197904]

約数ペア:

[(1, 20197904), (2, 10098952), (4, 5049476), (8, 2524738), (16, 1262369), (17, 1188112), (34, 594056), (68, 297028), (136, 148514), (272, 74257)]