21000456819

素因数分解:

$3^6\times {\mathrm{19}}^1\times {\mathrm{1061}}^1\times {\mathrm{1429}}^1$

素因数の和:2527

約数の個数: 56

約数和(自身を含む): 33197907600

約数和(自身を除く): 12197450781

約数列:

[1, 3, 9, 19, 27, 57, 81, 171, 243, 513, 729, 1061, 1429, 1539, 3183, 4287, 4617, 9549, 12861, 13851, 20159, 27151, 28647, 38583, 60477, 81453, 85941, 115749, 181431, 244359, 257823, 347247, 544293, 733077, 773469, 1041741, 1516169, 1632879, 2199231, 4548507, 4898637, 6597693, 13645521, 14695911, 19793079, 28807211, 40936563, 86421633, 122809689, 259264899, 368429067, 777794697, 1105287201, 2333384091, 7000152273, 21000456819]

約数ペア:

[(1, 21000456819), (3, 7000152273), (9, 2333384091), (19, 1105287201), (27, 777794697), (57, 368429067), (81, 259264899), (171, 122809689), (243, 86421633), (513, 40936563), (729, 28807211), (1061, 19793079), (1429, 14695911), (1539, 13645521), (3183, 6597693), (4287, 4898637), (4617, 4548507), (9549, 2199231), (12861, 1632879), (13851, 1516169), (20159, 1041741), (27151, 773469), (28647, 733077), (38583, 544293), (60477, 347247), (81453, 257823), (85941, 244359), (115749, 181431)]