20806191

素因数分解:

$3^2\times 7^1\times {\mathrm{23}}^1\times {\mathrm{83}}^1\times {\mathrm{173}}^1$

素因数の和:292

約数の個数: 48

約数和(自身を含む): 36481536

約数和(自身を除く): 15675345

約数列:

[1, 3, 7, 9, 21, 23, 63, 69, 83, 161, 173, 207, 249, 483, 519, 581, 747, 1211, 1449, 1557, 1743, 1909, 3633, 3979, 5229, 5727, 10899, 11937, 13363, 14359, 17181, 27853, 35811, 40089, 43077, 83559, 100513, 120267, 129231, 250677, 301539, 330257, 904617, 990771, 2311799, 2972313, 6935397, 20806191]

約数ペア:

[(1, 20806191), (3, 6935397), (7, 2972313), (9, 2311799), (21, 990771), (23, 904617), (63, 330257), (69, 301539), (83, 250677), (161, 129231), (173, 120267), (207, 100513), (249, 83559), (483, 43077), (519, 40089), (581, 35811), (747, 27853), (1211, 17181), (1449, 14359), (1557, 13363), (1743, 11937), (1909, 10899), (3633, 5727), (3979, 5229)]