21990618

素因数分解:

$2^1\times 3^2\times {\mathrm{13}}^2\times {\mathrm{7229}}^1$

素因数の和:7263

約数の個数: 36

約数和(自身を含む): 51600510

約数和(自身を除く): 29609892

約数列:

[1, 2, 3, 6, 9, 13, 18, 26, 39, 78, 117, 169, 234, 338, 507, 1014, 1521, 3042, 7229, 14458, 21687, 43374, 65061, 93977, 130122, 187954, 281931, 563862, 845793, 1221701, 1691586, 2443402, 3665103, 7330206, 10995309, 21990618]

約数ペア:

[(1, 21990618), (2, 10995309), (3, 7330206), (6, 3665103), (9, 2443402), (13, 1691586), (18, 1221701), (26, 845793), (39, 563862), (78, 281931), (117, 187954), (169, 130122), (234, 93977), (338, 65061), (507, 43374), (1014, 21687), (1521, 14458), (3042, 7229)]