20273120

素因数分解:

$2^5\times 5^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{787}}^1$

素因数の和:832

約数の個数: 96

約数和(自身を含む): 57189888

約数和(自身を除く): 36916768

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 23, 28, 32, 35, 40, 46, 56, 70, 80, 92, 112, 115, 140, 160, 161, 184, 224, 230, 280, 322, 368, 460, 560, 644, 736, 787, 805, 920, 1120, 1288, 1574, 1610, 1840, 2576, 3148, 3220, 3680, 3935, 5152, 5509, 6296, 6440, 7870, 11018, 12592, 12880, 15740, 18101, 22036, 25184, 25760, 27545, 31480, 36202, 44072, 55090, 62960, 72404, 88144, 90505, 110180, 125920, 126707, 144808, 176288, 181010, 220360, 253414, 289616, 362020, 440720, 506828, 579232, 633535, 724040, 881440, 1013656, 1267070, 1448080, 2027312, 2534140, 2896160, 4054624, 5068280, 10136560, 20273120]

約数ペア:

[(1, 20273120), (2, 10136560), (4, 5068280), (5, 4054624), (7, 2896160), (8, 2534140), (10, 2027312), (14, 1448080), (16, 1267070), (20, 1013656), (23, 881440), (28, 724040), (32, 633535), (35, 579232), (40, 506828), (46, 440720), (56, 362020), (70, 289616), (80, 253414), (92, 220360), (112, 181010), (115, 176288), (140, 144808), (160, 126707), (161, 125920), (184, 110180), (224, 90505), (230, 88144), (280, 72404), (322, 62960), (368, 55090), (460, 44072), (560, 36202), (644, 31480), (736, 27545), (787, 25760), (805, 25184), (920, 22036), (1120, 18101), (1288, 15740), (1574, 12880), (1610, 12592), (1840, 11018), (2576, 7870), (3148, 6440), (3220, 6296), (3680, 5509), (3935, 5152)]