21685426

素因数分解:

$2^1\times 7^1\times {\mathrm{239}}^1\times {\mathrm{6481}}^1$

素因数の和:6729

約数の個数: 16

約数和(自身を含む): 37336320

約数和(自身を除く): 15650894

約数列:

[1, 2, 7, 14, 239, 478, 1673, 3346, 6481, 12962, 45367, 90734, 1548959, 3097918, 10842713, 21685426]

約数ペア:

[(1, 21685426), (2, 10842713), (7, 3097918), (14, 1548959), (239, 90734), (478, 45367), (1673, 12962), (3346, 6481)]