20265245

素因数分解:

$5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{4049}}^1$

素因数の和:4085

約数の個数: 32

約数和(自身を含む): 32659200

約数和(自身を除く): 12393955

約数列:

[1, 5, 7, 11, 13, 35, 55, 65, 77, 91, 143, 385, 455, 715, 1001, 4049, 5005, 20245, 28343, 44539, 52637, 141715, 222695, 263185, 311773, 368459, 579007, 1558865, 1842295, 2895035, 4053049, 20265245]

約数ペア:

[(1, 20265245), (5, 4053049), (7, 2895035), (11, 1842295), (13, 1558865), (35, 579007), (55, 368459), (65, 311773), (77, 263185), (91, 222695), (143, 141715), (385, 52637), (455, 44539), (715, 28343), (1001, 20245), (4049, 5005)]