219640840

素因数分解:

$2^3\times 5^1\times {\mathrm{281}}^1\times {\mathrm{19541}}^1$

素因数の和:19833

約数の個数: 32

約数和(自身を含む): 495975960

約数和(自身を除く): 276335120

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 281, 562, 1124, 1405, 2248, 2810, 5620, 11240, 19541, 39082, 78164, 97705, 156328, 195410, 390820, 781640, 5491021, 10982042, 21964084, 27455105, 43928168, 54910210, 109820420, 219640840]

約数ペア:

[(1, 219640840), (2, 109820420), (4, 54910210), (5, 43928168), (8, 27455105), (10, 21964084), (20, 10982042), (40, 5491021), (281, 781640), (562, 390820), (1124, 195410), (1405, 156328), (2248, 97705), (2810, 78164), (5620, 39082), (11240, 19541)]