21745295

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{1789}}^1$

素因数の和:1835

約数の個数: 32

約数和(自身を含む): 32477760

約数和(自身を除く): 10732465

約数列:

[1, 5, 11, 13, 17, 55, 65, 85, 143, 187, 221, 715, 935, 1105, 1789, 2431, 8945, 12155, 19679, 23257, 30413, 98395, 116285, 152065, 255827, 334543, 395369, 1279135, 1672715, 1976845, 4349059, 21745295]

約数ペア:

[(1, 21745295), (5, 4349059), (11, 1976845), (13, 1672715), (17, 1279135), (55, 395369), (65, 334543), (85, 255827), (143, 152065), (187, 116285), (221, 98395), (715, 30413), (935, 23257), (1105, 19679), (1789, 12155), (2431, 8945)]