8520813

素因数分解:

$3^2\times 7^1\times {\mathrm{211}}^1\times {\mathrm{641}}^1$

素因数の和:865

約数の個数: 24

約数和(自身を含む): 14154816

約数和(自身を除く): 5634003

約数列:

[1, 3, 7, 9, 21, 63, 211, 633, 641, 1477, 1899, 1923, 4431, 4487, 5769, 13293, 13461, 40383, 135251, 405753, 946757, 1217259, 2840271, 8520813]

約数ペア:

[(1, 8520813), (3, 2840271), (7, 1217259), (9, 946757), (21, 405753), (63, 135251), (211, 40383), (633, 13461), (641, 13293), (1477, 5769), (1899, 4487), (1923, 4431)]