19808480

素因数分解:

$2^5\times 5^1\times {\mathrm{123803}}^1$

素因数の和:123818

約数の個数: 24

約数和(自身を含む): 46797912

約数和(自身を除く): 26989432

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 160, 123803, 247606, 495212, 619015, 990424, 1238030, 1980848, 2476060, 3961696, 4952120, 9904240, 19808480]

約数ペア:

[(1, 19808480), (2, 9904240), (4, 4952120), (5, 3961696), (8, 2476060), (10, 1980848), (16, 1238030), (20, 990424), (32, 619015), (40, 495212), (80, 247606), (160, 123803)]