204781990

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{113}}^1\times {\mathrm{25889}}^1$

素因数の和:26016

約数の個数: 32

約数和(自身を含む): 425010240

約数和(自身を除く): 220228250

約数列:

[1, 2, 5, 7, 10, 14, 35, 70, 113, 226, 565, 791, 1130, 1582, 3955, 7910, 25889, 51778, 129445, 181223, 258890, 362446, 906115, 1812230, 2925457, 5850914, 14627285, 20478199, 29254570, 40956398, 102390995, 204781990]

約数ペア:

[(1, 204781990), (2, 102390995), (5, 40956398), (7, 29254570), (10, 20478199), (14, 14627285), (35, 5850914), (70, 2925457), (113, 1812230), (226, 906115), (565, 362446), (791, 258890), (1130, 181223), (1582, 129445), (3955, 51778), (7910, 25889)]