21286566

素因数分解:

$2^1\times 3^2\times 7^1\times {\mathrm{241}}^1\times {\mathrm{701}}^1$

素因数の和:957

約数の個数: 48

約数和(自身を含む): 53003808

約数和(自身を除く): 31717242

約数列:

[1, 2, 3, 6, 7, 9, 14, 18, 21, 42, 63, 126, 241, 482, 701, 723, 1402, 1446, 1687, 2103, 2169, 3374, 4206, 4338, 4907, 5061, 6309, 9814, 10122, 12618, 14721, 15183, 29442, 30366, 44163, 88326, 168941, 337882, 506823, 1013646, 1182587, 1520469, 2365174, 3040938, 3547761, 7095522, 10643283, 21286566]

約数ペア:

[(1, 21286566), (2, 10643283), (3, 7095522), (6, 3547761), (7, 3040938), (9, 2365174), (14, 1520469), (18, 1182587), (21, 1013646), (42, 506823), (63, 337882), (126, 168941), (241, 88326), (482, 44163), (701, 30366), (723, 29442), (1402, 15183), (1446, 14721), (1687, 12618), (2103, 10122), (2169, 9814), (3374, 6309), (4206, 5061), (4338, 4907)]