21290188

素因数分解:

$2^2\times {\mathrm{17}}^1\times {\mathrm{67}}^1\times {\mathrm{4673}}^1$

素因数の和:4761

約数の個数: 24

約数和(自身を含む): 40046832

約数和(自身を除く): 18756644

約数列:

[1, 2, 4, 17, 34, 67, 68, 134, 268, 1139, 2278, 4556, 4673, 9346, 18692, 79441, 158882, 313091, 317764, 626182, 1252364, 5322547, 10645094, 21290188]

約数ペア:

[(1, 21290188), (2, 10645094), (4, 5322547), (17, 1252364), (34, 626182), (67, 317764), (68, 313091), (134, 158882), (268, 79441), (1139, 18692), (2278, 9346), (4556, 4673)]