6402940

素因数分解:

$2^2\times 5^1\times {\mathrm{389}}^1\times {\mathrm{823}}^1$

素因数の和:1221

約数の個数: 24

約数和(自身を含む): 13497120

約数和(自身を除く): 7094180

約数列:

[1, 2, 4, 5, 10, 20, 389, 778, 823, 1556, 1646, 1945, 3292, 3890, 4115, 7780, 8230, 16460, 320147, 640294, 1280588, 1600735, 3201470, 6402940]

約数ペア:

[(1, 6402940), (2, 3201470), (4, 1600735), (5, 1280588), (10, 640294), (20, 320147), (389, 16460), (778, 8230), (823, 7780), (1556, 4115), (1646, 3890), (1945, 3292)]