16401640

素因数分解:

$2^3\times 5^1\times {\mathrm{41}}^1\times {\mathrm{73}}^1\times {\mathrm{137}}^1$

素因数の和:262

約数の個数: 64

約数和(自身を含む): 38601360

約数和(自身を除く): 22199720

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 41, 73, 82, 137, 146, 164, 205, 274, 292, 328, 365, 410, 548, 584, 685, 730, 820, 1096, 1370, 1460, 1640, 2740, 2920, 2993, 5480, 5617, 5986, 10001, 11234, 11972, 14965, 20002, 22468, 23944, 28085, 29930, 40004, 44936, 50005, 56170, 59860, 80008, 100010, 112340, 119720, 200020, 224680, 400040, 410041, 820082, 1640164, 2050205, 3280328, 4100410, 8200820, 16401640]

約数ペア:

[(1, 16401640), (2, 8200820), (4, 4100410), (5, 3280328), (8, 2050205), (10, 1640164), (20, 820082), (40, 410041), (41, 400040), (73, 224680), (82, 200020), (137, 119720), (146, 112340), (164, 100010), (205, 80008), (274, 59860), (292, 56170), (328, 50005), (365, 44936), (410, 40004), (548, 29930), (584, 28085), (685, 23944), (730, 22468), (820, 20002), (1096, 14965), (1370, 11972), (1460, 11234), (1640, 10001), (2740, 5986), (2920, 5617), (2993, 5480)]