201628820

素因数分解:

$2^2\times 5^1\times {\mathrm{157}}^2\times {\mathrm{409}}^1$

素因数の和:732

約数の個数: 36

約数和(自身を含む): 427176540

約数和(自身を除く): 225547720

約数列:

[1, 2, 4, 5, 10, 20, 157, 314, 409, 628, 785, 818, 1570, 1636, 2045, 3140, 4090, 8180, 24649, 49298, 64213, 98596, 123245, 128426, 246490, 256852, 321065, 492980, 642130, 1284260, 10081441, 20162882, 40325764, 50407205, 100814410, 201628820]

約数ペア:

[(1, 201628820), (2, 100814410), (4, 50407205), (5, 40325764), (10, 20162882), (20, 10081441), (157, 1284260), (314, 642130), (409, 492980), (628, 321065), (785, 256852), (818, 246490), (1570, 128426), (1636, 123245), (2045, 98596), (3140, 64213), (4090, 49298), (8180, 24649)]