81819540

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{31}}^2\times {\mathrm{43}}^1$

素因数の和:131

約数の個数: 216

約数和(自身を含む): 286269984

約数和(自身を除く): 204450444

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 11, 12, 15, 18, 20, 22, 30, 31, 33, 36, 43, 44, 45, 55, 60, 62, 66, 86, 90, 93, 99, 110, 124, 129, 132, 155, 165, 172, 180, 186, 198, 215, 220, 258, 279, 310, 330, 341, 372, 387, 396, 430, 465, 473, 495, 516, 558, 620, 645, 660, 682, 774, 860, 930, 946, 961, 990, 1023, 1116, 1290, 1333, 1364, 1395, 1419, 1548, 1705, 1860, 1892, 1922, 1935, 1980, 2046, 2365, 2580, 2666, 2790, 2838, 2883, 3069, 3410, 3844, 3870, 3999, 4092, 4257, 4730, 4805, 5115, 5332, 5580, 5676, 5766, 6138, 6665, 6820, 7095, 7740, 7998, 8514, 8649, 9460, 9610, 10230, 10571, 11532, 11997, 12276, 13330, 14190, 14415, 14663, 15345, 15996, 17028, 17298, 19220, 19995, 20460, 21142, 21285, 23994, 26660, 28380, 28830, 29326, 30690, 31713, 34596, 39990, 41323, 42284, 42570, 43245, 43989, 47988, 52855, 57660, 58652, 59985, 61380, 63426, 73315, 79980, 82646, 85140, 86490, 87978, 95139, 105710, 119970, 123969, 126852, 131967, 146630, 158565, 165292, 172980, 175956, 190278, 206615, 211420, 219945, 239940, 247938, 263934, 293260, 317130, 371907, 380556, 413230, 439890, 454553, 475695, 495876, 527868, 619845, 634260, 659835, 743814, 826460, 879780, 909106, 951390, 1239690, 1319670, 1363659, 1487628, 1818212, 1859535, 1902780, 2272765, 2479380, 2639340, 2727318, 3719070, 4090977, 4545530, 5454636, 6818295, 7438140, 8181954, 9091060, 13636590, 16363908, 20454885, 27273180, 40909770, 81819540]

約数ペア:

[(1, 81819540), (2, 40909770), (3, 27273180), (4, 20454885), (5, 16363908), (6, 13636590), (9, 9091060), (10, 8181954), (11, 7438140), (12, 6818295), (15, 5454636), (18, 4545530), (20, 4090977), (22, 3719070), (30, 2727318), (31, 2639340), (33, 2479380), (36, 2272765), (43, 1902780), (44, 1859535), (45, 1818212), (55, 1487628), (60, 1363659), (62, 1319670), (66, 1239690), (86, 951390), (90, 909106), (93, 879780), (99, 826460), (110, 743814), (124, 659835), (129, 634260), (132, 619845), (155, 527868), (165, 495876), (172, 475695), (180, 454553), (186, 439890), (198, 413230), (215, 380556), (220, 371907), (258, 317130), (279, 293260), (310, 263934), (330, 247938), (341, 239940), (372, 219945), (387, 211420), (396, 206615), (430, 190278), (465, 175956), (473, 172980), (495, 165292), (516, 158565), (558, 146630), (620, 131967), (645, 126852), (660, 123969), (682, 119970), (774, 105710), (860, 95139), (930, 87978), (946, 86490), (961, 85140), (990, 82646), (1023, 79980), (1116, 73315), (1290, 63426), (1333, 61380), (1364, 59985), (1395, 58652), (1419, 57660), (1548, 52855), (1705, 47988), (1860, 43989), (1892, 43245), (1922, 42570), (1935, 42284), (1980, 41323), (2046, 39990), (2365, 34596), (2580, 31713), (2666, 30690), (2790, 29326), (2838, 28830), (2883, 28380), (3069, 26660), (3410, 23994), (3844, 21285), (3870, 21142), (3999, 20460), (4092, 19995), (4257, 19220), (4730, 17298), (4805, 17028), (5115, 15996), (5332, 15345), (5580, 14663), (5676, 14415), (5766, 14190), (6138, 13330), (6665, 12276), (6820, 11997), (7095, 11532), (7740, 10571), (7998, 10230), (8514, 9610), (8649, 9460)]