20838155

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{47}}^1\times {\mathrm{359}}^1$

素因数の和:443

約数の個数: 32

約数和(自身を含む): 29030400

約数和(自身を除く): 8192245

約数列:

[1, 5, 13, 19, 47, 65, 95, 235, 247, 359, 611, 893, 1235, 1795, 3055, 4465, 4667, 6821, 11609, 16873, 23335, 34105, 58045, 84365, 88673, 219349, 320587, 443365, 1096745, 1602935, 4167631, 20838155]

約数ペア:

[(1, 20838155), (5, 4167631), (13, 1602935), (19, 1096745), (47, 443365), (65, 320587), (95, 219349), (235, 88673), (247, 84365), (359, 58045), (611, 34105), (893, 23335), (1235, 16873), (1795, 11609), (3055, 6821), (4465, 4667)]