21004438

素因数分解:

$2^1\times 7^2\times {\mathrm{13}}^1\times {\mathrm{16487}}^1$

素因数の和:16516

約数の個数: 24

約数和(自身を含む): 39472272

約数和(自身を除く): 18467834

約数列:

[1, 2, 7, 13, 14, 26, 49, 91, 98, 182, 637, 1274, 16487, 32974, 115409, 214331, 230818, 428662, 807863, 1500317, 1615726, 3000634, 10502219, 21004438]

約数ペア:

[(1, 21004438), (2, 10502219), (7, 3000634), (13, 1615726), (14, 1500317), (26, 807863), (49, 428662), (91, 230818), (98, 214331), (182, 115409), (637, 32974), (1274, 16487)]