131118640

素因数分解:

$2^4\times 5^1\times {\mathrm{1638983}}^1$

素因数の和:1638996

約数の個数: 20

約数和(自身を含む): 304851024

約数和(自身を除く): 173732384

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 1638983, 3277966, 6555932, 8194915, 13111864, 16389830, 26223728, 32779660, 65559320, 131118640]

約数ペア:

[(1, 131118640), (2, 65559320), (4, 32779660), (5, 26223728), (8, 16389830), (10, 13111864), (16, 8194915), (20, 6555932), (40, 3277966), (80, 1638983)]