20337681

素因数分解:

$3^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{41}}^1\times {\mathrm{79}}^1$

素因数の和:166

約数の個数: 64

約数和(自身を含む): 36126720

約数和(自身を除く): 15789039

約数列:

[1, 3, 7, 13, 21, 23, 39, 41, 69, 79, 91, 123, 161, 237, 273, 287, 299, 483, 533, 553, 861, 897, 943, 1027, 1599, 1659, 1817, 2093, 2829, 3081, 3239, 3731, 5451, 6279, 6601, 7189, 9717, 11193, 12259, 12719, 19803, 21567, 22673, 23621, 36777, 38157, 42107, 68019, 70863, 74497, 85813, 126321, 165347, 223491, 257439, 294749, 496041, 521479, 884247, 968461, 1564437, 2905383, 6779227, 20337681]

約数ペア:

[(1, 20337681), (3, 6779227), (7, 2905383), (13, 1564437), (21, 968461), (23, 884247), (39, 521479), (41, 496041), (69, 294749), (79, 257439), (91, 223491), (123, 165347), (161, 126321), (237, 85813), (273, 74497), (287, 70863), (299, 68019), (483, 42107), (533, 38157), (553, 36777), (861, 23621), (897, 22673), (943, 21567), (1027, 19803), (1599, 12719), (1659, 12259), (1817, 11193), (2093, 9717), (2829, 7189), (3081, 6601), (3239, 6279), (3731, 5451)]