21982675

素因数分解:

$5^2\times {\mathrm{11}}^2\times {\mathrm{13}}^2\times {\mathrm{43}}^1$

素因数の和:101

約数の個数: 54

約数和(自身を含む): 33198396

約数和(自身を除く): 11215721

約数列:

[1, 5, 11, 13, 25, 43, 55, 65, 121, 143, 169, 215, 275, 325, 473, 559, 605, 715, 845, 1075, 1573, 1859, 2365, 2795, 3025, 3575, 4225, 5203, 6149, 7267, 7865, 9295, 11825, 13975, 20449, 26015, 30745, 36335, 39325, 46475, 67639, 79937, 102245, 130075, 153725, 181675, 338195, 399685, 511225, 879307, 1690975, 1998425, 4396535, 21982675]

約数ペア:

[(1, 21982675), (5, 4396535), (11, 1998425), (13, 1690975), (25, 879307), (43, 511225), (55, 399685), (65, 338195), (121, 181675), (143, 153725), (169, 130075), (215, 102245), (275, 79937), (325, 67639), (473, 46475), (559, 39325), (605, 36335), (715, 30745), (845, 26015), (1075, 20449), (1573, 13975), (1859, 11825), (2365, 9295), (2795, 7865), (3025, 7267), (3575, 6149), (4225, 5203)]