20711560

素因数分解:

$2^3\times 5^1\times {\mathrm{41}}^1\times {\mathrm{73}}^1\times {\mathrm{173}}^1$

素因数の和:298

約数の個数: 64

約数和(自身を含む): 48671280

約数和(自身を除く): 27959720

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 41, 73, 82, 146, 164, 173, 205, 292, 328, 346, 365, 410, 584, 692, 730, 820, 865, 1384, 1460, 1640, 1730, 2920, 2993, 3460, 5986, 6920, 7093, 11972, 12629, 14186, 14965, 23944, 25258, 28372, 29930, 35465, 50516, 56744, 59860, 63145, 70930, 101032, 119720, 126290, 141860, 252580, 283720, 505160, 517789, 1035578, 2071156, 2588945, 4142312, 5177890, 10355780, 20711560]

約数ペア:

[(1, 20711560), (2, 10355780), (4, 5177890), (5, 4142312), (8, 2588945), (10, 2071156), (20, 1035578), (40, 517789), (41, 505160), (73, 283720), (82, 252580), (146, 141860), (164, 126290), (173, 119720), (205, 101032), (292, 70930), (328, 63145), (346, 59860), (365, 56744), (410, 50516), (584, 35465), (692, 29930), (730, 28372), (820, 25258), (865, 23944), (1384, 14965), (1460, 14186), (1640, 12629), (1730, 11972), (2920, 7093), (2993, 6920), (3460, 5986)]