54980980

素因数分解:

$2^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{71}}^1\times {\mathrm{1249}}^1$

素因数の和:1360

約数の個数: 48

約数和(自身を含む): 120960000

約数和(自身を除く): 65979020

約数列:

[1, 2, 4, 5, 10, 20, 31, 62, 71, 124, 142, 155, 284, 310, 355, 620, 710, 1249, 1420, 2201, 2498, 4402, 4996, 6245, 8804, 11005, 12490, 22010, 24980, 38719, 44020, 77438, 88679, 154876, 177358, 193595, 354716, 387190, 443395, 774380, 886790, 1773580, 2749049, 5498098, 10996196, 13745245, 27490490, 54980980]

約数ペア:

[(1, 54980980), (2, 27490490), (4, 13745245), (5, 10996196), (10, 5498098), (20, 2749049), (31, 1773580), (62, 886790), (71, 774380), (124, 443395), (142, 387190), (155, 354716), (284, 193595), (310, 177358), (355, 154876), (620, 88679), (710, 77438), (1249, 44020), (1420, 38719), (2201, 24980), (2498, 22010), (4402, 12490), (4996, 11005), (6245, 8804)]