77221980

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{43}}^1\times {\mathrm{907}}^1$

素因数の和:976

約数の個数: 144

約数和(自身を含む): 261765504

約数和(自身を除く): 184543524

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 11, 12, 15, 18, 20, 22, 30, 33, 36, 43, 44, 45, 55, 60, 66, 86, 90, 99, 110, 129, 132, 165, 172, 180, 198, 215, 220, 258, 330, 387, 396, 430, 473, 495, 516, 645, 660, 774, 860, 907, 946, 990, 1290, 1419, 1548, 1814, 1892, 1935, 1980, 2365, 2580, 2721, 2838, 3628, 3870, 4257, 4535, 4730, 5442, 5676, 7095, 7740, 8163, 8514, 9070, 9460, 9977, 10884, 13605, 14190, 16326, 17028, 18140, 19954, 21285, 27210, 28380, 29931, 32652, 39001, 39908, 40815, 42570, 49885, 54420, 59862, 78002, 81630, 85140, 89793, 99770, 117003, 119724, 149655, 156004, 163260, 179586, 195005, 199540, 234006, 299310, 351009, 359172, 390010, 429011, 448965, 468012, 585015, 598620, 702018, 780020, 858022, 897930, 1170030, 1287033, 1404036, 1716044, 1755045, 1795860, 2145055, 2340060, 2574066, 3510090, 3861099, 4290110, 5148132, 6435165, 7020180, 7722198, 8580220, 12870330, 15444396, 19305495, 25740660, 38610990, 77221980]

約数ペア:

[(1, 77221980), (2, 38610990), (3, 25740660), (4, 19305495), (5, 15444396), (6, 12870330), (9, 8580220), (10, 7722198), (11, 7020180), (12, 6435165), (15, 5148132), (18, 4290110), (20, 3861099), (22, 3510090), (30, 2574066), (33, 2340060), (36, 2145055), (43, 1795860), (44, 1755045), (45, 1716044), (55, 1404036), (60, 1287033), (66, 1170030), (86, 897930), (90, 858022), (99, 780020), (110, 702018), (129, 598620), (132, 585015), (165, 468012), (172, 448965), (180, 429011), (198, 390010), (215, 359172), (220, 351009), (258, 299310), (330, 234006), (387, 199540), (396, 195005), (430, 179586), (473, 163260), (495, 156004), (516, 149655), (645, 119724), (660, 117003), (774, 99770), (860, 89793), (907, 85140), (946, 81630), (990, 78002), (1290, 59862), (1419, 54420), (1548, 49885), (1814, 42570), (1892, 40815), (1935, 39908), (1980, 39001), (2365, 32652), (2580, 29931), (2721, 28380), (2838, 27210), (3628, 21285), (3870, 19954), (4257, 18140), (4535, 17028), (4730, 16326), (5442, 14190), (5676, 13605), (7095, 10884), (7740, 9977), (8163, 9460), (8514, 9070)]