20507220

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{59}}^1\times {\mathrm{1931}}^1$

素因数の和:2005

約数の個数: 72

約数和(自身を含む): 63292320

約数和(自身を除く): 42785100

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 59, 60, 90, 118, 177, 180, 236, 295, 354, 531, 590, 708, 885, 1062, 1180, 1770, 1931, 2124, 2655, 3540, 3862, 5310, 5793, 7724, 9655, 10620, 11586, 17379, 19310, 23172, 28965, 34758, 38620, 57930, 69516, 86895, 113929, 115860, 173790, 227858, 341787, 347580, 455716, 569645, 683574, 1025361, 1139290, 1367148, 1708935, 2050722, 2278580, 3417870, 4101444, 5126805, 6835740, 10253610, 20507220]

約数ペア:

[(1, 20507220), (2, 10253610), (3, 6835740), (4, 5126805), (5, 4101444), (6, 3417870), (9, 2278580), (10, 2050722), (12, 1708935), (15, 1367148), (18, 1139290), (20, 1025361), (30, 683574), (36, 569645), (45, 455716), (59, 347580), (60, 341787), (90, 227858), (118, 173790), (177, 115860), (180, 113929), (236, 86895), (295, 69516), (354, 57930), (531, 38620), (590, 34758), (708, 28965), (885, 23172), (1062, 19310), (1180, 17379), (1770, 11586), (1931, 10620), (2124, 9655), (2655, 7724), (3540, 5793), (3862, 5310)]