21365464

素因数分解:

$2^3\times {\mathrm{17}}^1\times {\mathrm{127}}^1\times {\mathrm{1237}}^1$

素因数の和:1387

約数の個数: 32

約数和(自身を含む): 42785280

約数和(自身を除く): 21419816

約数列:

[1, 2, 4, 8, 17, 34, 68, 127, 136, 254, 508, 1016, 1237, 2159, 2474, 4318, 4948, 8636, 9896, 17272, 21029, 42058, 84116, 157099, 168232, 314198, 628396, 1256792, 2670683, 5341366, 10682732, 21365464]

約数ペア:

[(1, 21365464), (2, 10682732), (4, 5341366), (8, 2670683), (17, 1256792), (34, 628396), (68, 314198), (127, 168232), (136, 157099), (254, 84116), (508, 42058), (1016, 21029), (1237, 17272), (2159, 9896), (2474, 8636), (4318, 4948)]