8404280

素因数分解:

$2^3\times 5^1\times {\mathrm{163}}^1\times {\mathrm{1289}}^1$

素因数の和:1463

約数の個数: 32

約数和(自身を含む): 19040400

約数和(自身を除く): 10636120

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 163, 326, 652, 815, 1289, 1304, 1630, 2578, 3260, 5156, 6445, 6520, 10312, 12890, 25780, 51560, 210107, 420214, 840428, 1050535, 1680856, 2101070, 4202140, 8404280]

約数ペア:

[(1, 8404280), (2, 4202140), (4, 2101070), (5, 1680856), (8, 1050535), (10, 840428), (20, 420214), (40, 210107), (163, 51560), (326, 25780), (652, 12890), (815, 10312), (1289, 6520), (1304, 6445), (1630, 5156), (2578, 3260)]