285397780

素因数分解:

$2^2\times 5^1\times {\mathrm{31}}^3\times {\mathrm{479}}^1$

素因数の和:581

約数の個数: 48

約数和(自身を含む): 620605440

約数和(自身を除く): 335207660

約数列:

[1, 2, 4, 5, 10, 20, 31, 62, 124, 155, 310, 479, 620, 958, 961, 1916, 1922, 2395, 3844, 4790, 4805, 9580, 9610, 14849, 19220, 29698, 29791, 59396, 59582, 74245, 119164, 148490, 148955, 296980, 297910, 460319, 595820, 920638, 1841276, 2301595, 4603190, 9206380, 14269889, 28539778, 57079556, 71349445, 142698890, 285397780]

約数ペア:

[(1, 285397780), (2, 142698890), (4, 71349445), (5, 57079556), (10, 28539778), (20, 14269889), (31, 9206380), (62, 4603190), (124, 2301595), (155, 1841276), (310, 920638), (479, 595820), (620, 460319), (958, 297910), (961, 296980), (1916, 148955), (1922, 148490), (2395, 119164), (3844, 74245), (4790, 59582), (4805, 59396), (9580, 29791), (9610, 29698), (14849, 19220)]