71780000

素因数分解:

$2^5\times 5^4\times {\mathrm{37}}^1\times {\mathrm{97}}^1$

素因数の和:164

約数の個数: 120

約数和(自身を含む): 183231972

約数和(自身を除く): 111451972

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 37, 40, 50, 74, 80, 97, 100, 125, 148, 160, 185, 194, 200, 250, 296, 370, 388, 400, 485, 500, 592, 625, 740, 776, 800, 925, 970, 1000, 1184, 1250, 1480, 1552, 1850, 1940, 2000, 2425, 2500, 2960, 3104, 3589, 3700, 3880, 4000, 4625, 4850, 5000, 5920, 7178, 7400, 7760, 9250, 9700, 10000, 12125, 14356, 14800, 15520, 17945, 18500, 19400, 20000, 23125, 24250, 28712, 29600, 35890, 37000, 38800, 46250, 48500, 57424, 60625, 71780, 74000, 77600, 89725, 92500, 97000, 114848, 121250, 143560, 148000, 179450, 185000, 194000, 242500, 287120, 358900, 370000, 388000, 448625, 485000, 574240, 717800, 740000, 897250, 970000, 1435600, 1794500, 1940000, 2243125, 2871200, 3589000, 4486250, 7178000, 8972500, 14356000, 17945000, 35890000, 71780000]

約数ペア:

[(1, 71780000), (2, 35890000), (4, 17945000), (5, 14356000), (8, 8972500), (10, 7178000), (16, 4486250), (20, 3589000), (25, 2871200), (32, 2243125), (37, 1940000), (40, 1794500), (50, 1435600), (74, 970000), (80, 897250), (97, 740000), (100, 717800), (125, 574240), (148, 485000), (160, 448625), (185, 388000), (194, 370000), (200, 358900), (250, 287120), (296, 242500), (370, 194000), (388, 185000), (400, 179450), (485, 148000), (500, 143560), (592, 121250), (625, 114848), (740, 97000), (776, 92500), (800, 89725), (925, 77600), (970, 74000), (1000, 71780), (1184, 60625), (1250, 57424), (1480, 48500), (1552, 46250), (1850, 38800), (1940, 37000), (2000, 35890), (2425, 29600), (2500, 28712), (2960, 24250), (3104, 23125), (3589, 20000), (3700, 19400), (3880, 18500), (4000, 17945), (4625, 15520), (4850, 14800), (5000, 14356), (5920, 12125), (7178, 10000), (7400, 9700), (7760, 9250)]