253394980

素因数分解:

$2^2\times 5^1\times {\mathrm{809}}^1\times {\mathrm{15661}}^1$

素因数の和:16479

約数の個数: 24

約数和(自身を含む): 532821240

約数和(自身を除く): 279426260

約数列:

[1, 2, 4, 5, 10, 20, 809, 1618, 3236, 4045, 8090, 15661, 16180, 31322, 62644, 78305, 156610, 313220, 12669749, 25339498, 50678996, 63348745, 126697490, 253394980]

約数ペア:

[(1, 253394980), (2, 126697490), (4, 63348745), (5, 50678996), (10, 25339498), (20, 12669749), (809, 313220), (1618, 156610), (3236, 78305), (4045, 62644), (8090, 31322), (15661, 16180)]