8421813

素因数分解:

$3^4\times {\mathrm{173}}^1\times {\mathrm{601}}^1$

素因数の和:786

約数の個数: 20

約数和(自身を含む): 12674508

約数和(自身を除く): 4252695

約数列:

[1, 3, 9, 27, 81, 173, 519, 601, 1557, 1803, 4671, 5409, 14013, 16227, 48681, 103973, 311919, 935757, 2807271, 8421813]

約数ペア:

[(1, 8421813), (3, 2807271), (9, 935757), (27, 311919), (81, 103973), (173, 48681), (519, 16227), (601, 14013), (1557, 5409), (1803, 4671)]