21840087

素因数分解:

$3^1\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{43}}^1\times {\mathrm{433}}^1$

素因数の和:519

約数の個数: 32

約数和(自身を含む): 32997888

約数和(自身を除く): 11157801

約数列:

[1, 3, 17, 23, 43, 51, 69, 129, 391, 433, 731, 989, 1173, 1299, 2193, 2967, 7361, 9959, 16813, 18619, 22083, 29877, 50439, 55857, 169303, 316523, 428237, 507909, 949569, 1284711, 7280029, 21840087]

約数ペア:

[(1, 21840087), (3, 7280029), (17, 1284711), (23, 949569), (43, 507909), (51, 428237), (69, 316523), (129, 169303), (391, 55857), (433, 50439), (731, 29877), (989, 22083), (1173, 18619), (1299, 16813), (2193, 9959), (2967, 7361)]