18420831

素因数分解:

$3^3\times {\mathrm{11}}^1\times {\mathrm{13}}^2\times {\mathrm{367}}^1$

素因数の和:413

約数の個数: 48

約数和(自身を含む): 32325120

約数和(自身を除く): 13904289

約数列:

[1, 3, 9, 11, 13, 27, 33, 39, 99, 117, 143, 169, 297, 351, 367, 429, 507, 1101, 1287, 1521, 1859, 3303, 3861, 4037, 4563, 4771, 5577, 9909, 12111, 14313, 16731, 36333, 42939, 50193, 52481, 62023, 108999, 128817, 157443, 186069, 472329, 558207, 682253, 1416987, 1674621, 2046759, 6140277, 18420831]

約数ペア:

[(1, 18420831), (3, 6140277), (9, 2046759), (11, 1674621), (13, 1416987), (27, 682253), (33, 558207), (39, 472329), (99, 186069), (117, 157443), (143, 128817), (169, 108999), (297, 62023), (351, 52481), (367, 50193), (429, 42939), (507, 36333), (1101, 16731), (1287, 14313), (1521, 12111), (1859, 9909), (3303, 5577), (3861, 4771), (4037, 4563)]