20986380

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{3761}}^1$

素因数の和:3807

約数の個数: 72

約数和(自身を含む): 65729664

約数和(自身を除く): 44743284

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 31, 36, 45, 60, 62, 90, 93, 124, 155, 180, 186, 279, 310, 372, 465, 558, 620, 930, 1116, 1395, 1860, 2790, 3761, 5580, 7522, 11283, 15044, 18805, 22566, 33849, 37610, 45132, 56415, 67698, 75220, 112830, 116591, 135396, 169245, 225660, 233182, 338490, 349773, 466364, 582955, 676980, 699546, 1049319, 1165910, 1399092, 1748865, 2098638, 2331820, 3497730, 4197276, 5246595, 6995460, 10493190, 20986380]

約数ペア:

[(1, 20986380), (2, 10493190), (3, 6995460), (4, 5246595), (5, 4197276), (6, 3497730), (9, 2331820), (10, 2098638), (12, 1748865), (15, 1399092), (18, 1165910), (20, 1049319), (30, 699546), (31, 676980), (36, 582955), (45, 466364), (60, 349773), (62, 338490), (90, 233182), (93, 225660), (124, 169245), (155, 135396), (180, 116591), (186, 112830), (279, 75220), (310, 67698), (372, 56415), (465, 45132), (558, 37610), (620, 33849), (930, 22566), (1116, 18805), (1395, 15044), (1860, 11283), (2790, 7522), (3761, 5580)]