20921380856

素因数分解:

$2^3\times {\mathrm{71}}^1\times {\mathrm{439}}^1\times {\mathrm{83903}}^1$

素因数の和:84419

約数の個数: 32

約数和(自身を含む): 39871180800

約数和(自身を除く): 18949799944

約数列:

[1, 2, 4, 8, 71, 142, 284, 439, 568, 878, 1756, 3512, 31169, 62338, 83903, 124676, 167806, 249352, 335612, 671224, 5957113, 11914226, 23828452, 36833417, 47656904, 73666834, 147333668, 294667336, 2615172607, 5230345214, 10460690428, 20921380856]

約数ペア:

[(1, 20921380856), (2, 10460690428), (4, 5230345214), (8, 2615172607), (71, 294667336), (142, 147333668), (284, 73666834), (439, 47656904), (568, 36833417), (878, 23828452), (1756, 11914226), (3512, 5957113), (31169, 671224), (62338, 335612), (83903, 249352), (124676, 167806)]