640448637

素因数分解:

$3^1\times {\mathrm{19}}^1\times {\mathrm{73}}^1\times {\mathrm{149}}^1\times {\mathrm{1033}}^1$

素因数の和:1277

約数の個数: 32

約数和(自身を含む): 918192000

約数和(自身を除く): 277743363

約数列:

[1, 3, 19, 57, 73, 149, 219, 447, 1033, 1387, 2831, 3099, 4161, 8493, 10877, 19627, 32631, 58881, 75409, 153917, 206663, 226227, 461751, 619989, 1432771, 2924423, 4298313, 8773269, 11235941, 33707823, 213482879, 640448637]

約数ペア:

[(1, 640448637), (3, 213482879), (19, 33707823), (57, 11235941), (73, 8773269), (149, 4298313), (219, 2924423), (447, 1432771), (1033, 619989), (1387, 461751), (2831, 226227), (3099, 206663), (4161, 153917), (8493, 75409), (10877, 58881), (19627, 32631)]