20764305

素因数分解:

$3^2\times 5^1\times {\mathrm{67}}^1\times {\mathrm{71}}^1\times {\mathrm{97}}^1$

素因数の和:246

約数の個数: 48

約数和(自身を含む): 37425024

約数和(自身を除く): 16660719

約数列:

[1, 3, 5, 9, 15, 45, 67, 71, 97, 201, 213, 291, 335, 355, 485, 603, 639, 873, 1005, 1065, 1455, 3015, 3195, 4365, 4757, 6499, 6887, 14271, 19497, 20661, 23785, 32495, 34435, 42813, 58491, 61983, 71355, 97485, 103305, 214065, 292455, 309915, 461429, 1384287, 2307145, 4152861, 6921435, 20764305]

約数ペア:

[(1, 20764305), (3, 6921435), (5, 4152861), (9, 2307145), (15, 1384287), (45, 461429), (67, 309915), (71, 292455), (97, 214065), (201, 103305), (213, 97485), (291, 71355), (335, 61983), (355, 58491), (485, 42813), (603, 34435), (639, 32495), (873, 23785), (1005, 20661), (1065, 19497), (1455, 14271), (3015, 6887), (3195, 6499), (4365, 4757)]