21004808

素因数分解:

$2^3\times {\mathrm{11}}^1\times {\mathrm{238691}}^1$

素因数の和:238708

約数の個数: 16

約数和(自身を含む): 42964560

約数和(自身を除く): 21959752

約数列:

[1, 2, 4, 8, 11, 22, 44, 88, 238691, 477382, 954764, 1909528, 2625601, 5251202, 10502404, 21004808]

約数ペア:

[(1, 21004808), (2, 10502404), (4, 5251202), (8, 2625601), (11, 1909528), (22, 954764), (44, 477382), (88, 238691)]