21220446

素因数分解:

$2^1\times 3^1\times {\mathrm{13}}^1\times {\mathrm{197}}^1\times {\mathrm{1381}}^1$

素因数の和:1596

約数の個数: 32

約数和(自身を含む): 45970848

約数和(自身を除く): 24750402

約数列:

[1, 2, 3, 6, 13, 26, 39, 78, 197, 394, 591, 1182, 1381, 2561, 2762, 4143, 5122, 7683, 8286, 15366, 17953, 35906, 53859, 107718, 272057, 544114, 816171, 1632342, 3536741, 7073482, 10610223, 21220446]

約数ペア:

[(1, 21220446), (2, 10610223), (3, 7073482), (6, 3536741), (13, 1632342), (26, 816171), (39, 544114), (78, 272057), (197, 107718), (394, 53859), (591, 35906), (1182, 17953), (1381, 15366), (2561, 8286), (2762, 7683), (4143, 5122)]