1980784

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{89}}^1\times {\mathrm{107}}^1$

素因数の和:217

約数の個数: 40

約数和(自身を含む): 4218480

約数和(自身を除く): 2237696

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 89, 104, 107, 178, 208, 214, 356, 428, 712, 856, 1157, 1391, 1424, 1712, 2314, 2782, 4628, 5564, 9256, 9523, 11128, 18512, 19046, 22256, 38092, 76184, 123799, 152368, 247598, 495196, 990392, 1980784]

約数ペア:

[(1, 1980784), (2, 990392), (4, 495196), (8, 247598), (13, 152368), (16, 123799), (26, 76184), (52, 38092), (89, 22256), (104, 19046), (107, 18512), (178, 11128), (208, 9523), (214, 9256), (356, 5564), (428, 4628), (712, 2782), (856, 2314), (1157, 1712), (1391, 1424)]