280449939

素因数分解:

$3^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{389}}^1\times {\mathrm{3121}}^1$

素因数の和:3531

約数の個数: 32

約数和(自身を含む): 467550720

約数和(自身を除く): 187100781

約数列:

[1, 3, 7, 11, 21, 33, 77, 231, 389, 1167, 2723, 3121, 4279, 8169, 9363, 12837, 21847, 29953, 34331, 65541, 89859, 102993, 240317, 720951, 1214069, 3642207, 8498483, 13354759, 25495449, 40064277, 93483313, 280449939]

約数ペア:

[(1, 280449939), (3, 93483313), (7, 40064277), (11, 25495449), (21, 13354759), (33, 8498483), (77, 3642207), (231, 1214069), (389, 720951), (1167, 240317), (2723, 102993), (3121, 89859), (4279, 65541), (8169, 34331), (9363, 29953), (12837, 21847)]