20823140

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{283}}^2$

素因数の和:588

約数の個数: 36

約数和(自身を含む): 47259324

約数和(自身を除く): 26436184

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 283, 566, 1132, 1415, 2830, 3679, 5660, 7358, 14716, 18395, 36790, 73580, 80089, 160178, 320356, 400445, 800890, 1041157, 1601780, 2082314, 4164628, 5205785, 10411570, 20823140]

約数ペア:

[(1, 20823140), (2, 10411570), (4, 5205785), (5, 4164628), (10, 2082314), (13, 1601780), (20, 1041157), (26, 800890), (52, 400445), (65, 320356), (130, 160178), (260, 80089), (283, 73580), (566, 36790), (1132, 18395), (1415, 14716), (2830, 7358), (3679, 5660)]