31879980

素因数分解:

$2^2\times 3^4\times 5^1\times {\mathrm{11}}^1\times {\mathrm{1789}}^1$

素因数の和:1821

約数の個数: 120

約数和(自身を含む): 109161360

約数和(自身を除く): 77281380

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 11, 12, 15, 18, 20, 22, 27, 30, 33, 36, 44, 45, 54, 55, 60, 66, 81, 90, 99, 108, 110, 132, 135, 162, 165, 180, 198, 220, 270, 297, 324, 330, 396, 405, 495, 540, 594, 660, 810, 891, 990, 1188, 1485, 1620, 1782, 1789, 1980, 2970, 3564, 3578, 4455, 5367, 5940, 7156, 8910, 8945, 10734, 16101, 17820, 17890, 19679, 21468, 26835, 32202, 35780, 39358, 48303, 53670, 59037, 64404, 78716, 80505, 96606, 98395, 107340, 118074, 144909, 161010, 177111, 193212, 196790, 236148, 241515, 289818, 295185, 322020, 354222, 393580, 483030, 531333, 579636, 590370, 708444, 724545, 885555, 966060, 1062666, 1180740, 1449090, 1593999, 1771110, 2125332, 2656665, 2898180, 3187998, 3542220, 5313330, 6375996, 7969995, 10626660, 15939990, 31879980]

約数ペア:

[(1, 31879980), (2, 15939990), (3, 10626660), (4, 7969995), (5, 6375996), (6, 5313330), (9, 3542220), (10, 3187998), (11, 2898180), (12, 2656665), (15, 2125332), (18, 1771110), (20, 1593999), (22, 1449090), (27, 1180740), (30, 1062666), (33, 966060), (36, 885555), (44, 724545), (45, 708444), (54, 590370), (55, 579636), (60, 531333), (66, 483030), (81, 393580), (90, 354222), (99, 322020), (108, 295185), (110, 289818), (132, 241515), (135, 236148), (162, 196790), (165, 193212), (180, 177111), (198, 161010), (220, 144909), (270, 118074), (297, 107340), (324, 98395), (330, 96606), (396, 80505), (405, 78716), (495, 64404), (540, 59037), (594, 53670), (660, 48303), (810, 39358), (891, 35780), (990, 32202), (1188, 26835), (1485, 21468), (1620, 19679), (1782, 17890), (1789, 17820), (1980, 16101), (2970, 10734), (3564, 8945), (3578, 8910), (4455, 7156), (5367, 5940)]