20428758

素因数分解:

$2^1\times 3^2\times 7^1\times {\mathrm{73}}^1\times {\mathrm{2221}}^1$

素因数の和:2309

約数の個数: 48

約数和(自身を含む): 51301536

約数和(自身を除く): 30872778

約数列:

[1, 2, 3, 6, 7, 9, 14, 18, 21, 42, 63, 73, 126, 146, 219, 438, 511, 657, 1022, 1314, 1533, 2221, 3066, 4442, 4599, 6663, 9198, 13326, 15547, 19989, 31094, 39978, 46641, 93282, 139923, 162133, 279846, 324266, 486399, 972798, 1134931, 1459197, 2269862, 2918394, 3404793, 6809586, 10214379, 20428758]

約数ペア:

[(1, 20428758), (2, 10214379), (3, 6809586), (6, 3404793), (7, 2918394), (9, 2269862), (14, 1459197), (18, 1134931), (21, 972798), (42, 486399), (63, 324266), (73, 279846), (126, 162133), (146, 139923), (219, 93282), (438, 46641), (511, 39978), (657, 31094), (1022, 19989), (1314, 15547), (1533, 13326), (2221, 9198), (3066, 6663), (4442, 4599)]