21435995

素因数分解:

$5^1\times 7^1\times {\mathrm{47}}^1\times {\mathrm{83}}^1\times {\mathrm{157}}^1$

素因数の和:299

約数の個数: 32

約数和(自身を含む): 30578688

約数和(自身を除く): 9142693

約数列:

[1, 5, 7, 35, 47, 83, 157, 235, 329, 415, 581, 785, 1099, 1645, 2905, 3901, 5495, 7379, 13031, 19505, 27307, 36895, 51653, 65155, 91217, 136535, 258265, 456085, 612457, 3062285, 4287199, 21435995]

約数ペア:

[(1, 21435995), (5, 4287199), (7, 3062285), (35, 612457), (47, 456085), (83, 258265), (157, 136535), (235, 91217), (329, 65155), (415, 51653), (581, 36895), (785, 27307), (1099, 19505), (1645, 13031), (2905, 7379), (3901, 5495)]