20478591

素因数分解:

$3^2\times 7^1\times {\mathrm{17}}^1\times {\mathrm{19121}}^1$

素因数の和:19151

約数の個数: 24

約数和(自身を含む): 35796384

約数和(自身を除く): 15317793

約数列:

[1, 3, 7, 9, 17, 21, 51, 63, 119, 153, 357, 1071, 19121, 57363, 133847, 172089, 325057, 401541, 975171, 1204623, 2275399, 2925513, 6826197, 20478591]

約数ペア:

[(1, 20478591), (3, 6826197), (7, 2925513), (9, 2275399), (17, 1204623), (21, 975171), (51, 401541), (63, 325057), (119, 172089), (153, 133847), (357, 57363), (1071, 19121)]