20752480

素因数分解:

$2^5\times 5^1\times 7^2\times {\mathrm{2647}}^1$

素因数の和:2676

約数の個数: 72

約数和(自身を含む): 57053808

約数和(自身を除く): 36301328

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 32, 35, 40, 49, 56, 70, 80, 98, 112, 140, 160, 196, 224, 245, 280, 392, 490, 560, 784, 980, 1120, 1568, 1960, 2647, 3920, 5294, 7840, 10588, 13235, 18529, 21176, 26470, 37058, 42352, 52940, 74116, 84704, 92645, 105880, 129703, 148232, 185290, 211760, 259406, 296464, 370580, 423520, 518812, 592928, 648515, 741160, 1037624, 1297030, 1482320, 2075248, 2594060, 2964640, 4150496, 5188120, 10376240, 20752480]

約数ペア:

[(1, 20752480), (2, 10376240), (4, 5188120), (5, 4150496), (7, 2964640), (8, 2594060), (10, 2075248), (14, 1482320), (16, 1297030), (20, 1037624), (28, 741160), (32, 648515), (35, 592928), (40, 518812), (49, 423520), (56, 370580), (70, 296464), (80, 259406), (98, 211760), (112, 185290), (140, 148232), (160, 129703), (196, 105880), (224, 92645), (245, 84704), (280, 74116), (392, 52940), (490, 42352), (560, 37058), (784, 26470), (980, 21176), (1120, 18529), (1568, 13235), (1960, 10588), (2647, 7840), (3920, 5294)]