21447258

素因数分解:

$2^1\times 3^1\times 7^1\times {\mathrm{691}}^1\times {\mathrm{739}}^1$

素因数の和:1442

約数の個数: 32

約数和(自身を含む): 49159680

約数和(自身を除く): 27712422

約数列:

[1, 2, 3, 6, 7, 14, 21, 42, 691, 739, 1382, 1478, 2073, 2217, 4146, 4434, 4837, 5173, 9674, 10346, 14511, 15519, 29022, 31038, 510649, 1021298, 1531947, 3063894, 3574543, 7149086, 10723629, 21447258]

約数ペア:

[(1, 21447258), (2, 10723629), (3, 7149086), (6, 3574543), (7, 3063894), (14, 1531947), (21, 1021298), (42, 510649), (691, 31038), (739, 29022), (1382, 15519), (1478, 14511), (2073, 10346), (2217, 9674), (4146, 5173), (4434, 4837)]