201720725

素因数分解:

$5^2\times {\mathrm{17}}^1\times {\mathrm{89}}^1\times {\mathrm{5333}}^1$

素因数の和:5449

約数の個数: 24

約数和(自身を含む): 267873480

約数和(自身を除く): 66152755

約数列:

[1, 5, 17, 25, 85, 89, 425, 445, 1513, 2225, 5333, 7565, 26665, 37825, 90661, 133325, 453305, 474637, 2266525, 2373185, 8068829, 11865925, 40344145, 201720725]

約数ペア:

[(1, 201720725), (5, 40344145), (17, 11865925), (25, 8068829), (85, 2373185), (89, 2266525), (425, 474637), (445, 453305), (1513, 133325), (2225, 90661), (5333, 37825), (7565, 26665)]