20998668

素因数分解:

$2^2\times 3^1\times {\mathrm{29}}^1\times {\mathrm{83}}^1\times {\mathrm{727}}^1$

素因数の和:846

約数の個数: 48

約数和(自身を含む): 51367680

約数和(自身を除く): 30369012

約数列:

[1, 2, 3, 4, 6, 12, 29, 58, 83, 87, 116, 166, 174, 249, 332, 348, 498, 727, 996, 1454, 2181, 2407, 2908, 4362, 4814, 7221, 8724, 9628, 14442, 21083, 28884, 42166, 60341, 63249, 84332, 120682, 126498, 181023, 241364, 252996, 362046, 724092, 1749889, 3499778, 5249667, 6999556, 10499334, 20998668]

約数ペア:

[(1, 20998668), (2, 10499334), (3, 6999556), (4, 5249667), (6, 3499778), (12, 1749889), (29, 724092), (58, 362046), (83, 252996), (87, 241364), (116, 181023), (166, 126498), (174, 120682), (249, 84332), (332, 63249), (348, 60341), (498, 42166), (727, 28884), (996, 21083), (1454, 14442), (2181, 9628), (2407, 8724), (2908, 7221), (4362, 4814)]