21791880

素因数分解:

$2^3\times 3^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{5503}}^1$

素因数の和:5531

約数の個数: 96

約数和(自身を含む): 77276160

約数和(自身を除く): 55484280

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 11, 12, 15, 18, 20, 22, 24, 30, 33, 36, 40, 44, 45, 55, 60, 66, 72, 88, 90, 99, 110, 120, 132, 165, 180, 198, 220, 264, 330, 360, 396, 440, 495, 660, 792, 990, 1320, 1980, 3960, 5503, 11006, 16509, 22012, 27515, 33018, 44024, 49527, 55030, 60533, 66036, 82545, 99054, 110060, 121066, 132072, 165090, 181599, 198108, 220120, 242132, 247635, 302665, 330180, 363198, 396216, 484264, 495270, 544797, 605330, 660360, 726396, 907995, 990540, 1089594, 1210660, 1452792, 1815990, 1981080, 2179188, 2421320, 2723985, 3631980, 4358376, 5447970, 7263960, 10895940, 21791880]

約数ペア:

[(1, 21791880), (2, 10895940), (3, 7263960), (4, 5447970), (5, 4358376), (6, 3631980), (8, 2723985), (9, 2421320), (10, 2179188), (11, 1981080), (12, 1815990), (15, 1452792), (18, 1210660), (20, 1089594), (22, 990540), (24, 907995), (30, 726396), (33, 660360), (36, 605330), (40, 544797), (44, 495270), (45, 484264), (55, 396216), (60, 363198), (66, 330180), (72, 302665), (88, 247635), (90, 242132), (99, 220120), (110, 198108), (120, 181599), (132, 165090), (165, 132072), (180, 121066), (198, 110060), (220, 99054), (264, 82545), (330, 66036), (360, 60533), (396, 55030), (440, 49527), (495, 44024), (660, 33018), (792, 27515), (990, 22012), (1320, 16509), (1980, 11006), (3960, 5503)]