81356800

素因数分解:

$2^{11}\times 5^2\times 7^1\times {\mathrm{227}}^1$

素因数の和:266

約数の個数: 144

約数和(自身を含む): 231547680

約数和(自身を除く): 150190880

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 25, 28, 32, 35, 40, 50, 56, 64, 70, 80, 100, 112, 128, 140, 160, 175, 200, 224, 227, 256, 280, 320, 350, 400, 448, 454, 512, 560, 640, 700, 800, 896, 908, 1024, 1120, 1135, 1280, 1400, 1589, 1600, 1792, 1816, 2048, 2240, 2270, 2560, 2800, 3178, 3200, 3584, 3632, 4480, 4540, 5120, 5600, 5675, 6356, 6400, 7168, 7264, 7945, 8960, 9080, 10240, 11200, 11350, 12712, 12800, 14336, 14528, 15890, 17920, 18160, 22400, 22700, 25424, 25600, 29056, 31780, 35840, 36320, 39725, 44800, 45400, 50848, 51200, 58112, 63560, 71680, 72640, 79450, 89600, 90800, 101696, 116224, 127120, 145280, 158900, 179200, 181600, 203392, 232448, 254240, 290560, 317800, 358400, 363200, 406784, 464896, 508480, 581120, 635600, 726400, 813568, 1016960, 1162240, 1271200, 1452800, 1627136, 2033920, 2324480, 2542400, 2905600, 3254272, 4067840, 5084800, 5811200, 8135680, 10169600, 11622400, 16271360, 20339200, 40678400, 81356800]

約数ペア:

[(1, 81356800), (2, 40678400), (4, 20339200), (5, 16271360), (7, 11622400), (8, 10169600), (10, 8135680), (14, 5811200), (16, 5084800), (20, 4067840), (25, 3254272), (28, 2905600), (32, 2542400), (35, 2324480), (40, 2033920), (50, 1627136), (56, 1452800), (64, 1271200), (70, 1162240), (80, 1016960), (100, 813568), (112, 726400), (128, 635600), (140, 581120), (160, 508480), (175, 464896), (200, 406784), (224, 363200), (227, 358400), (256, 317800), (280, 290560), (320, 254240), (350, 232448), (400, 203392), (448, 181600), (454, 179200), (512, 158900), (560, 145280), (640, 127120), (700, 116224), (800, 101696), (896, 90800), (908, 89600), (1024, 79450), (1120, 72640), (1135, 71680), (1280, 63560), (1400, 58112), (1589, 51200), (1600, 50848), (1792, 45400), (1816, 44800), (2048, 39725), (2240, 36320), (2270, 35840), (2560, 31780), (2800, 29056), (3178, 25600), (3200, 25424), (3584, 22700), (3632, 22400), (4480, 18160), (4540, 17920), (5120, 15890), (5600, 14528), (5675, 14336), (6356, 12800), (6400, 12712), (7168, 11350), (7264, 11200), (7945, 10240), (8960, 9080)]