64768520

素因数分解:

$2^3\times 5^1\times {\mathrm{41}}^1\times {\mathrm{73}}^1\times {\mathrm{541}}^1$

素因数の和:666

約数の個数: 64

約数和(自身を含む): 151608240

約数和(自身を除く): 86839720

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 41, 73, 82, 146, 164, 205, 292, 328, 365, 410, 541, 584, 730, 820, 1082, 1460, 1640, 2164, 2705, 2920, 2993, 4328, 5410, 5986, 10820, 11972, 14965, 21640, 22181, 23944, 29930, 39493, 44362, 59860, 78986, 88724, 110905, 119720, 157972, 177448, 197465, 221810, 315944, 394930, 443620, 789860, 887240, 1579720, 1619213, 3238426, 6476852, 8096065, 12953704, 16192130, 32384260, 64768520]

約数ペア:

[(1, 64768520), (2, 32384260), (4, 16192130), (5, 12953704), (8, 8096065), (10, 6476852), (20, 3238426), (40, 1619213), (41, 1579720), (73, 887240), (82, 789860), (146, 443620), (164, 394930), (205, 315944), (292, 221810), (328, 197465), (365, 177448), (410, 157972), (541, 119720), (584, 110905), (730, 88724), (820, 78986), (1082, 59860), (1460, 44362), (1640, 39493), (2164, 29930), (2705, 23944), (2920, 22181), (2993, 21640), (4328, 14965), (5410, 11972), (5986, 10820)]