661705040

素因数分解:

$2^4\times 5^1\times {\mathrm{37}}^1\times {\mathrm{223549}}^1$

素因数の和:223599

約数の個数: 40

約数和(自身を含む): 1580051400

約数和(自身を除く): 918346360

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 37, 40, 74, 80, 148, 185, 296, 370, 592, 740, 1480, 2960, 223549, 447098, 894196, 1117745, 1788392, 2235490, 3576784, 4470980, 8271313, 8941960, 16542626, 17883920, 33085252, 41356565, 66170504, 82713130, 132341008, 165426260, 330852520, 661705040]

約数ペア:

[(1, 661705040), (2, 330852520), (4, 165426260), (5, 132341008), (8, 82713130), (10, 66170504), (16, 41356565), (20, 33085252), (37, 17883920), (40, 16542626), (74, 8941960), (80, 8271313), (148, 4470980), (185, 3576784), (296, 2235490), (370, 1788392), (592, 1117745), (740, 894196), (1480, 447098), (2960, 223549)]