21678041

素因数分解:

$7^2\times {\mathrm{11}}^1\times {\mathrm{37}}^1\times {\mathrm{1087}}^1$

素因数の和:1149

約数の個数: 24

約数和(自身を含む): 28279296

約数和(自身を除く): 6601255

約数列:

[1, 7, 11, 37, 49, 77, 259, 407, 539, 1087, 1813, 2849, 7609, 11957, 19943, 40219, 53263, 83699, 281533, 442409, 585893, 1970731, 3096863, 21678041]

約数ペア:

[(1, 21678041), (7, 3096863), (11, 1970731), (37, 585893), (49, 442409), (77, 281533), (259, 83699), (407, 53263), (539, 40219), (1087, 19943), (1813, 11957), (2849, 7609)]