81357375

素因数分解:

$3^1\times 5^3\times {\mathrm{11}}^3\times {\mathrm{163}}^1$

素因数の和:214

約数の個数: 64

約数和(自身を含む): 149819904

約数和(自身を除く): 68462529

約数列:

[1, 3, 5, 11, 15, 25, 33, 55, 75, 121, 125, 163, 165, 275, 363, 375, 489, 605, 815, 825, 1331, 1375, 1793, 1815, 2445, 3025, 3993, 4075, 4125, 5379, 6655, 8965, 9075, 12225, 15125, 19723, 19965, 20375, 26895, 33275, 44825, 45375, 59169, 61125, 98615, 99825, 134475, 166375, 216953, 224125, 295845, 493075, 499125, 650859, 672375, 1084765, 1479225, 2465375, 3254295, 5423825, 7396125, 16271475, 27119125, 81357375]

約数ペア:

[(1, 81357375), (3, 27119125), (5, 16271475), (11, 7396125), (15, 5423825), (25, 3254295), (33, 2465375), (55, 1479225), (75, 1084765), (121, 672375), (125, 650859), (163, 499125), (165, 493075), (275, 295845), (363, 224125), (375, 216953), (489, 166375), (605, 134475), (815, 99825), (825, 98615), (1331, 61125), (1375, 59169), (1793, 45375), (1815, 44825), (2445, 33275), (3025, 26895), (3993, 20375), (4075, 19965), (4125, 19723), (5379, 15125), (6655, 12225), (8965, 9075)]