81355500

素因数分解:

$2^2\times 3^2\times 5^3\times {\mathrm{101}}^1\times {\mathrm{179}}^1$

素因数の和:305

約数の個数: 144

約数和(自身を含む): 260638560

約数和(自身を除く): 179283060

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 25, 30, 36, 45, 50, 60, 75, 90, 100, 101, 125, 150, 179, 180, 202, 225, 250, 300, 303, 358, 375, 404, 450, 500, 505, 537, 606, 716, 750, 895, 900, 909, 1010, 1074, 1125, 1212, 1500, 1515, 1611, 1790, 1818, 2020, 2148, 2250, 2525, 2685, 3030, 3222, 3580, 3636, 4475, 4500, 4545, 5050, 5370, 6060, 6444, 7575, 8055, 8950, 9090, 10100, 10740, 12625, 13425, 15150, 16110, 17900, 18079, 18180, 22375, 22725, 25250, 26850, 30300, 32220, 36158, 37875, 40275, 44750, 45450, 50500, 53700, 54237, 67125, 72316, 75750, 80550, 89500, 90395, 90900, 108474, 113625, 134250, 151500, 161100, 162711, 180790, 201375, 216948, 227250, 268500, 271185, 325422, 361580, 402750, 451975, 454500, 542370, 650844, 805500, 813555, 903950, 1084740, 1355925, 1627110, 1807900, 2259875, 2711850, 3254220, 4067775, 4519750, 5423700, 6779625, 8135550, 9039500, 13559250, 16271100, 20338875, 27118500, 40677750, 81355500]

約数ペア:

[(1, 81355500), (2, 40677750), (3, 27118500), (4, 20338875), (5, 16271100), (6, 13559250), (9, 9039500), (10, 8135550), (12, 6779625), (15, 5423700), (18, 4519750), (20, 4067775), (25, 3254220), (30, 2711850), (36, 2259875), (45, 1807900), (50, 1627110), (60, 1355925), (75, 1084740), (90, 903950), (100, 813555), (101, 805500), (125, 650844), (150, 542370), (179, 454500), (180, 451975), (202, 402750), (225, 361580), (250, 325422), (300, 271185), (303, 268500), (358, 227250), (375, 216948), (404, 201375), (450, 180790), (500, 162711), (505, 161100), (537, 151500), (606, 134250), (716, 113625), (750, 108474), (895, 90900), (900, 90395), (909, 89500), (1010, 80550), (1074, 75750), (1125, 72316), (1212, 67125), (1500, 54237), (1515, 53700), (1611, 50500), (1790, 45450), (1818, 44750), (2020, 40275), (2148, 37875), (2250, 36158), (2525, 32220), (2685, 30300), (3030, 26850), (3222, 25250), (3580, 22725), (3636, 22375), (4475, 18180), (4500, 18079), (4545, 17900), (5050, 16110), (5370, 15150), (6060, 13425), (6444, 12625), (7575, 10740), (8055, 10100), (8950, 9090)]