20529915

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{8501}}^1$

素因数の和:8539

約数の個数: 32

約数和(自身を含む): 39177216

約数和(自身を除く): 18647301

約数列:

[1, 3, 5, 7, 15, 21, 23, 35, 69, 105, 115, 161, 345, 483, 805, 2415, 8501, 25503, 42505, 59507, 127515, 178521, 195523, 297535, 586569, 892605, 977615, 1368661, 2932845, 4105983, 6843305, 20529915]

約数ペア:

[(1, 20529915), (3, 6843305), (5, 4105983), (7, 2932845), (15, 1368661), (21, 977615), (23, 892605), (35, 586569), (69, 297535), (105, 195523), (115, 178521), (161, 127515), (345, 59507), (483, 42505), (805, 25503), (2415, 8501)]