20297500

素因数分解:

$2^2\times 5^4\times {\mathrm{23}}^1\times {\mathrm{353}}^1$

素因数の和:400

約数の個数: 60

約数和(自身を含む): 46447632

約数和(自身を除く): 26150132

約数列:

[1, 2, 4, 5, 10, 20, 23, 25, 46, 50, 92, 100, 115, 125, 230, 250, 353, 460, 500, 575, 625, 706, 1150, 1250, 1412, 1765, 2300, 2500, 2875, 3530, 5750, 7060, 8119, 8825, 11500, 14375, 16238, 17650, 28750, 32476, 35300, 40595, 44125, 57500, 81190, 88250, 162380, 176500, 202975, 220625, 405950, 441250, 811900, 882500, 1014875, 2029750, 4059500, 5074375, 10148750, 20297500]

約数ペア:

[(1, 20297500), (2, 10148750), (4, 5074375), (5, 4059500), (10, 2029750), (20, 1014875), (23, 882500), (25, 811900), (46, 441250), (50, 405950), (92, 220625), (100, 202975), (115, 176500), (125, 162380), (230, 88250), (250, 81190), (353, 57500), (460, 44125), (500, 40595), (575, 35300), (625, 32476), (706, 28750), (1150, 17650), (1250, 16238), (1412, 14375), (1765, 11500), (2300, 8825), (2500, 8119), (2875, 7060), (3530, 5750)]