21805882

素因数分解:

$2^1\times 7^4\times {\mathrm{19}}^1\times {\mathrm{239}}^1$

素因数の和:288

約数の個数: 40

約数和(自身を含む): 40334400

約数和(自身を除く): 18528518

約数列:

[1, 2, 7, 14, 19, 38, 49, 98, 133, 239, 266, 343, 478, 686, 931, 1673, 1862, 2401, 3346, 4541, 4802, 6517, 9082, 11711, 13034, 23422, 31787, 45619, 63574, 81977, 91238, 163954, 222509, 445018, 573839, 1147678, 1557563, 3115126, 10902941, 21805882]

約数ペア:

[(1, 21805882), (2, 10902941), (7, 3115126), (14, 1557563), (19, 1147678), (38, 573839), (49, 445018), (98, 222509), (133, 163954), (239, 91238), (266, 81977), (343, 63574), (478, 45619), (686, 31787), (931, 23422), (1673, 13034), (1862, 11711), (2401, 9082), (3346, 6517), (4541, 4802)]