778021215

素因数分解:

$3^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{1367}}^1\times {\mathrm{1997}}^1$

素因数の和:3391

約数の個数: 32

約数和(自身を含む): 1311966720

約数和(自身を除く): 533945505

約数列:

[1, 3, 5, 15, 19, 57, 95, 285, 1367, 1997, 4101, 5991, 6835, 9985, 20505, 25973, 29955, 37943, 77919, 113829, 129865, 189715, 389595, 569145, 2729899, 8189697, 13649495, 40948485, 51868081, 155604243, 259340405, 778021215]

約数ペア:

[(1, 778021215), (3, 259340405), (5, 155604243), (15, 51868081), (19, 40948485), (57, 13649495), (95, 8189697), (285, 2729899), (1367, 569145), (1997, 389595), (4101, 189715), (5991, 129865), (6835, 113829), (9985, 77919), (20505, 37943), (25973, 29955)]