21993840

素因数分解:

$2^4\times 3^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{2777}}^1$

素因数の和:2807

約数の個数: 120

約数和(自身を含む): 80606448

約数和(自身を除く): 58612608

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 11, 12, 15, 16, 18, 20, 22, 24, 30, 33, 36, 40, 44, 45, 48, 55, 60, 66, 72, 80, 88, 90, 99, 110, 120, 132, 144, 165, 176, 180, 198, 220, 240, 264, 330, 360, 396, 440, 495, 528, 660, 720, 792, 880, 990, 1320, 1584, 1980, 2640, 2777, 3960, 5554, 7920, 8331, 11108, 13885, 16662, 22216, 24993, 27770, 30547, 33324, 41655, 44432, 49986, 55540, 61094, 66648, 83310, 91641, 99972, 111080, 122188, 124965, 133296, 152735, 166620, 183282, 199944, 222160, 244376, 249930, 274923, 305470, 333240, 366564, 399888, 458205, 488752, 499860, 549846, 610940, 666480, 733128, 916410, 999720, 1099692, 1221880, 1374615, 1466256, 1832820, 1999440, 2199384, 2443760, 2749230, 3665640, 4398768, 5498460, 7331280, 10996920, 21993840]

約数ペア:

[(1, 21993840), (2, 10996920), (3, 7331280), (4, 5498460), (5, 4398768), (6, 3665640), (8, 2749230), (9, 2443760), (10, 2199384), (11, 1999440), (12, 1832820), (15, 1466256), (16, 1374615), (18, 1221880), (20, 1099692), (22, 999720), (24, 916410), (30, 733128), (33, 666480), (36, 610940), (40, 549846), (44, 499860), (45, 488752), (48, 458205), (55, 399888), (60, 366564), (66, 333240), (72, 305470), (80, 274923), (88, 249930), (90, 244376), (99, 222160), (110, 199944), (120, 183282), (132, 166620), (144, 152735), (165, 133296), (176, 124965), (180, 122188), (198, 111080), (220, 99972), (240, 91641), (264, 83310), (330, 66648), (360, 61094), (396, 55540), (440, 49986), (495, 44432), (528, 41655), (660, 33324), (720, 30547), (792, 27770), (880, 24993), (990, 22216), (1320, 16662), (1584, 13885), (1980, 11108), (2640, 8331), (2777, 7920), (3960, 5554)]