21759320

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{2909}}^1$

素因数の和:2948

約数の個数: 64

約数和(自身を含む): 56570400

約数和(自身を除く): 34811080

約数列:

[1, 2, 4, 5, 8, 10, 11, 17, 20, 22, 34, 40, 44, 55, 68, 85, 88, 110, 136, 170, 187, 220, 340, 374, 440, 680, 748, 935, 1496, 1870, 2909, 3740, 5818, 7480, 11636, 14545, 23272, 29090, 31999, 49453, 58180, 63998, 98906, 116360, 127996, 159995, 197812, 247265, 255992, 319990, 395624, 494530, 543983, 639980, 989060, 1087966, 1279960, 1978120, 2175932, 2719915, 4351864, 5439830, 10879660, 21759320]

約数ペア:

[(1, 21759320), (2, 10879660), (4, 5439830), (5, 4351864), (8, 2719915), (10, 2175932), (11, 1978120), (17, 1279960), (20, 1087966), (22, 989060), (34, 639980), (40, 543983), (44, 494530), (55, 395624), (68, 319990), (85, 255992), (88, 247265), (110, 197812), (136, 159995), (170, 127996), (187, 116360), (220, 98906), (340, 63998), (374, 58180), (440, 49453), (680, 31999), (748, 29090), (935, 23272), (1496, 14545), (1870, 11636), (2909, 7480), (3740, 5818)]