19687955

素因数分解:

$5^1\times 7^2\times {\mathrm{17}}^1\times {\mathrm{29}}^1\times {\mathrm{163}}^1$

素因数の和:228

約数の個数: 48

約数和(自身を含む): 30287520

約数和(自身を除く): 10599565

約数列:

[1, 5, 7, 17, 29, 35, 49, 85, 119, 145, 163, 203, 245, 493, 595, 815, 833, 1015, 1141, 1421, 2465, 2771, 3451, 4165, 4727, 5705, 7105, 7987, 13855, 17255, 19397, 23635, 24157, 33089, 39935, 80359, 96985, 120785, 135779, 165445, 231623, 401795, 562513, 678895, 1158115, 2812565, 3937591, 19687955]

約数ペア:

[(1, 19687955), (5, 3937591), (7, 2812565), (17, 1158115), (29, 678895), (35, 562513), (49, 401795), (85, 231623), (119, 165445), (145, 135779), (163, 120785), (203, 96985), (245, 80359), (493, 39935), (595, 33089), (815, 24157), (833, 23635), (1015, 19397), (1141, 17255), (1421, 13855), (2465, 7987), (2771, 7105), (3451, 5705), (4165, 4727)]