78442820

素因数分解:

$2^2\times 5^1\times {\mathrm{89}}^1\times {\mathrm{127}}^1\times {\mathrm{347}}^1$

素因数の和:572

約数の個数: 48

約数和(自身を含む): 168376320

約数和(自身を除く): 89933500

約数列:

[1, 2, 4, 5, 10, 20, 89, 127, 178, 254, 347, 356, 445, 508, 635, 694, 890, 1270, 1388, 1735, 1780, 2540, 3470, 6940, 11303, 22606, 30883, 44069, 45212, 56515, 61766, 88138, 113030, 123532, 154415, 176276, 220345, 226060, 308830, 440690, 617660, 881380, 3922141, 7844282, 15688564, 19610705, 39221410, 78442820]

約数ペア:

[(1, 78442820), (2, 39221410), (4, 19610705), (5, 15688564), (10, 7844282), (20, 3922141), (89, 881380), (127, 617660), (178, 440690), (254, 308830), (347, 226060), (356, 220345), (445, 176276), (508, 154415), (635, 123532), (694, 113030), (890, 88138), (1270, 61766), (1388, 56515), (1735, 45212), (1780, 44069), (2540, 30883), (3470, 22606), (6940, 11303)]