20742330880

素因数分解:

$2^9\times 5^1\times {\mathrm{127}}^1\times {\mathrm{63799}}^1$

素因数の和:63949

約数の個数: 80

約数和(自身を含む): 50125363200

約数和(自身を除く): 29383032320

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 127, 128, 160, 254, 256, 320, 508, 512, 635, 640, 1016, 1270, 1280, 2032, 2540, 2560, 4064, 5080, 8128, 10160, 16256, 20320, 32512, 40640, 63799, 65024, 81280, 127598, 162560, 255196, 318995, 325120, 510392, 637990, 1020784, 1275980, 2041568, 2551960, 4083136, 5103920, 8102473, 8166272, 10207840, 16204946, 16332544, 20415680, 32409892, 32665088, 40512365, 40831360, 64819784, 81024730, 81662720, 129639568, 162049460, 163325440, 259279136, 324098920, 518558272, 648197840, 1037116544, 1296395680, 2074233088, 2592791360, 4148466176, 5185582720, 10371165440, 20742330880]

約数ペア:

[(1, 20742330880), (2, 10371165440), (4, 5185582720), (5, 4148466176), (8, 2592791360), (10, 2074233088), (16, 1296395680), (20, 1037116544), (32, 648197840), (40, 518558272), (64, 324098920), (80, 259279136), (127, 163325440), (128, 162049460), (160, 129639568), (254, 81662720), (256, 81024730), (320, 64819784), (508, 40831360), (512, 40512365), (635, 32665088), (640, 32409892), (1016, 20415680), (1270, 16332544), (1280, 16204946), (2032, 10207840), (2540, 8166272), (2560, 8102473), (4064, 5103920), (5080, 4083136), (8128, 2551960), (10160, 2041568), (16256, 1275980), (20320, 1020784), (32512, 637990), (40640, 510392), (63799, 325120), (65024, 318995), (81280, 255196), (127598, 162560)]