20195609

素因数分解:

$7^1\times {\mathrm{17}}^2\times {\mathrm{67}}^1\times {\mathrm{149}}^1$

素因数の和:257

約数の個数: 24

約数和(自身を含む): 25051200

約数和(自身を除く): 4855591

約数列:

[1, 7, 17, 67, 119, 149, 289, 469, 1043, 1139, 2023, 2533, 7973, 9983, 17731, 19363, 43061, 69881, 135541, 169711, 301427, 1187977, 2885087, 20195609]

約数ペア:

[(1, 20195609), (7, 2885087), (17, 1187977), (67, 301427), (119, 169711), (149, 135541), (289, 69881), (469, 43061), (1043, 19363), (1139, 17731), (2023, 9983), (2533, 7973)]