128274220

素因数分解:

$2^2\times 5^1\times {\mathrm{23}}^1\times {\mathrm{431}}^1\times {\mathrm{647}}^1$

素因数の和:1110

約数の個数: 48

約数和(自身を含む): 282175488

約数和(自身を除く): 153901268

約数列:

[1, 2, 4, 5, 10, 20, 23, 46, 92, 115, 230, 431, 460, 647, 862, 1294, 1724, 2155, 2588, 3235, 4310, 6470, 8620, 9913, 12940, 14881, 19826, 29762, 39652, 49565, 59524, 74405, 99130, 148810, 198260, 278857, 297620, 557714, 1115428, 1394285, 2788570, 5577140, 6413711, 12827422, 25654844, 32068555, 64137110, 128274220]

約数ペア:

[(1, 128274220), (2, 64137110), (4, 32068555), (5, 25654844), (10, 12827422), (20, 6413711), (23, 5577140), (46, 2788570), (92, 1394285), (115, 1115428), (230, 557714), (431, 297620), (460, 278857), (647, 198260), (862, 148810), (1294, 99130), (1724, 74405), (2155, 59524), (2588, 49565), (3235, 39652), (4310, 29762), (6470, 19826), (8620, 14881), (9913, 12940)]