205479940

素因数分解:

$2^2\times 5^1\times {\mathrm{53}}^1\times {\mathrm{149}}^1\times {\mathrm{1301}}^1$

素因数の和:1512

約数の個数: 48

約数和(自身を含む): 442940400

約数和(自身を除く): 237460460

約数列:

[1, 2, 4, 5, 10, 20, 53, 106, 149, 212, 265, 298, 530, 596, 745, 1060, 1301, 1490, 2602, 2980, 5204, 6505, 7897, 13010, 15794, 26020, 31588, 39485, 68953, 78970, 137906, 157940, 193849, 275812, 344765, 387698, 689530, 775396, 969245, 1379060, 1938490, 3876980, 10273997, 20547994, 41095988, 51369985, 102739970, 205479940]

約数ペア:

[(1, 205479940), (2, 102739970), (4, 51369985), (5, 41095988), (10, 20547994), (20, 10273997), (53, 3876980), (106, 1938490), (149, 1379060), (212, 969245), (265, 775396), (298, 689530), (530, 387698), (596, 344765), (745, 275812), (1060, 193849), (1301, 157940), (1490, 137906), (2602, 78970), (2980, 68953), (5204, 39485), (6505, 31588), (7897, 26020), (13010, 15794)]