205156760

素因数分解:

$2^3\times 5^1\times {\mathrm{31}}^1\times {\mathrm{165449}}^1$

素因数の和:165491

約数の個数: 32

約数和(自身を含む): 476496000

約数和(自身を除く): 271339240

約数列:

[1, 2, 4, 5, 8, 10, 20, 31, 40, 62, 124, 155, 248, 310, 620, 1240, 165449, 330898, 661796, 827245, 1323592, 1654490, 3308980, 5128919, 6617960, 10257838, 20515676, 25644595, 41031352, 51289190, 102578380, 205156760]

約数ペア:

[(1, 205156760), (2, 102578380), (4, 51289190), (5, 41031352), (8, 25644595), (10, 20515676), (20, 10257838), (31, 6617960), (40, 5128919), (62, 3308980), (124, 1654490), (155, 1323592), (248, 827245), (310, 661796), (620, 330898), (1240, 165449)]