21001786905

素因数分解:

$3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{41}}^1\times {\mathrm{3104477}}^1$

素因数の和:3104537

約数の個数: 32

約数和(自身を含む): 37551765888

約数和(自身を除く): 16549978983

約数列:

[1, 3, 5, 11, 15, 33, 41, 55, 123, 165, 205, 451, 615, 1353, 2255, 6765, 3104477, 9313431, 15522385, 34149247, 46567155, 102447741, 127283557, 170746235, 381850671, 512238705, 636417785, 1400119127, 1909253355, 4200357381, 7000595635, 21001786905]

約数ペア:

[(1, 21001786905), (3, 7000595635), (5, 4200357381), (11, 1909253355), (15, 1400119127), (33, 636417785), (41, 512238705), (55, 381850671), (123, 170746235), (165, 127283557), (205, 102447741), (451, 46567155), (615, 34149247), (1353, 15522385), (2255, 9313431), (6765, 3104477)]