20306585

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^2\times {\mathrm{23}}^1\times {\mathrm{47}}^1$

素因数の和:122

約数の個数: 48

約数和(自身を含む): 29707776

約数和(自身を除く): 9401191

約数列:

[1, 5, 13, 17, 23, 47, 65, 85, 115, 221, 235, 289, 299, 391, 611, 799, 1081, 1105, 1445, 1495, 1955, 3055, 3757, 3995, 5083, 5405, 6647, 10387, 13583, 14053, 18377, 18785, 25415, 33235, 51935, 67915, 70265, 86411, 91885, 176579, 238901, 312409, 432055, 882895, 1194505, 1562045, 4061317, 20306585]

約数ペア:

[(1, 20306585), (5, 4061317), (13, 1562045), (17, 1194505), (23, 882895), (47, 432055), (65, 312409), (85, 238901), (115, 176579), (221, 91885), (235, 86411), (289, 70265), (299, 67915), (391, 51935), (611, 33235), (799, 25415), (1081, 18785), (1105, 18377), (1445, 14053), (1495, 13583), (1955, 10387), (3055, 6647), (3757, 5405), (3995, 5083)]