20768220

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{617}}^1$

素因数の和:660

約数の個数: 144

約数和(自身を含む): 72884448

約数和(自身を除く): 52116228

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 11, 12, 15, 17, 18, 20, 22, 30, 33, 34, 36, 44, 45, 51, 55, 60, 66, 68, 85, 90, 99, 102, 110, 132, 153, 165, 170, 180, 187, 198, 204, 220, 255, 306, 330, 340, 374, 396, 495, 510, 561, 612, 617, 660, 748, 765, 935, 990, 1020, 1122, 1234, 1530, 1683, 1851, 1870, 1980, 2244, 2468, 2805, 3060, 3085, 3366, 3702, 3740, 5553, 5610, 6170, 6732, 6787, 7404, 8415, 9255, 10489, 11106, 11220, 12340, 13574, 16830, 18510, 20361, 20978, 22212, 27148, 27765, 31467, 33660, 33935, 37020, 40722, 41956, 52445, 55530, 61083, 62934, 67870, 81444, 94401, 101805, 104890, 111060, 115379, 122166, 125868, 135740, 157335, 188802, 203610, 209780, 230758, 244332, 305415, 314670, 346137, 377604, 407220, 461516, 472005, 576895, 610830, 629340, 692274, 944010, 1038411, 1153790, 1221660, 1384548, 1730685, 1888020, 2076822, 2307580, 3461370, 4153644, 5192055, 6922740, 10384110, 20768220]

約数ペア:

[(1, 20768220), (2, 10384110), (3, 6922740), (4, 5192055), (5, 4153644), (6, 3461370), (9, 2307580), (10, 2076822), (11, 1888020), (12, 1730685), (15, 1384548), (17, 1221660), (18, 1153790), (20, 1038411), (22, 944010), (30, 692274), (33, 629340), (34, 610830), (36, 576895), (44, 472005), (45, 461516), (51, 407220), (55, 377604), (60, 346137), (66, 314670), (68, 305415), (85, 244332), (90, 230758), (99, 209780), (102, 203610), (110, 188802), (132, 157335), (153, 135740), (165, 125868), (170, 122166), (180, 115379), (187, 111060), (198, 104890), (204, 101805), (220, 94401), (255, 81444), (306, 67870), (330, 62934), (340, 61083), (374, 55530), (396, 52445), (495, 41956), (510, 40722), (561, 37020), (612, 33935), (617, 33660), (660, 31467), (748, 27765), (765, 27148), (935, 22212), (990, 20978), (1020, 20361), (1122, 18510), (1234, 16830), (1530, 13574), (1683, 12340), (1851, 11220), (1870, 11106), (1980, 10489), (2244, 9255), (2468, 8415), (2805, 7404), (3060, 6787), (3085, 6732), (3366, 6170), (3702, 5610), (3740, 5553)]