21193958

素因数分解:

$2^1\times {\mathrm{53}}^1\times {\mathrm{179}}^1\times {\mathrm{1117}}^1$

素因数の和:1351

約数の個数: 16

約数和(自身を含む): 32600880

約数和(自身を除く): 11406922

約数列:

[1, 2, 53, 106, 179, 358, 1117, 2234, 9487, 18974, 59201, 118402, 199943, 399886, 10596979, 21193958]

約数ペア:

[(1, 21193958), (2, 10596979), (53, 399886), (106, 199943), (179, 118402), (358, 59201), (1117, 18974), (2234, 9487)]