1561520

素因数分解:

$2^4\times 5^1\times {\mathrm{131}}^1\times {\mathrm{149}}^1$

素因数の和:293

約数の個数: 40

約数和(自身を含む): 3682800

約数和(自身を除く): 2121280

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 131, 149, 262, 298, 524, 596, 655, 745, 1048, 1192, 1310, 1490, 2096, 2384, 2620, 2980, 5240, 5960, 10480, 11920, 19519, 39038, 78076, 97595, 156152, 195190, 312304, 390380, 780760, 1561520]

約数ペア:

[(1, 1561520), (2, 780760), (4, 390380), (5, 312304), (8, 195190), (10, 156152), (16, 97595), (20, 78076), (40, 39038), (80, 19519), (131, 11920), (149, 10480), (262, 5960), (298, 5240), (524, 2980), (596, 2620), (655, 2384), (745, 2096), (1048, 1490), (1192, 1310)]