20505818

素因数分解:

$2^1\times {\mathrm{31}}^2\times {\mathrm{47}}^1\times {\mathrm{227}}^1$

素因数の和:338

約数の個数: 24

約数和(自身を含む): 32602176

約数和(自身を除く): 12096358

約数列:

[1, 2, 31, 47, 62, 94, 227, 454, 961, 1457, 1922, 2914, 7037, 10669, 14074, 21338, 45167, 90334, 218147, 330739, 436294, 661478, 10252909, 20505818]

約数ペア:

[(1, 20505818), (2, 10252909), (31, 661478), (47, 436294), (62, 330739), (94, 218147), (227, 90334), (454, 45167), (961, 21338), (1457, 14074), (1922, 10669), (2914, 7037)]