21560913

素因数分解:

$3^2\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{557}}^1$

素因数の和:614

約数の個数: 48

約数和(自身を含む): 37604736

約数和(自身を除く): 16043823

約数列:

[1, 3, 9, 11, 17, 23, 33, 51, 69, 99, 153, 187, 207, 253, 391, 557, 561, 759, 1173, 1671, 1683, 2277, 3519, 4301, 5013, 6127, 9469, 12811, 12903, 18381, 28407, 38433, 38709, 55143, 85221, 104159, 115299, 140921, 217787, 312477, 422763, 653361, 937431, 1268289, 1960083, 2395657, 7186971, 21560913]

約数ペア:

[(1, 21560913), (3, 7186971), (9, 2395657), (11, 1960083), (17, 1268289), (23, 937431), (33, 653361), (51, 422763), (69, 312477), (99, 217787), (153, 140921), (187, 115299), (207, 104159), (253, 85221), (391, 55143), (557, 38709), (561, 38433), (759, 28407), (1173, 18381), (1671, 12903), (1683, 12811), (2277, 9469), (3519, 6127), (4301, 5013)]