20758540

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{157}}^1\times {\mathrm{601}}^1$

素因数の和:778

約数の個数: 48

約数和(自身を含む): 47938464

約数和(自身を除く): 27179924

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 157, 220, 314, 601, 628, 785, 1202, 1570, 1727, 2404, 3005, 3140, 3454, 6010, 6611, 6908, 8635, 12020, 13222, 17270, 26444, 33055, 34540, 66110, 94357, 132220, 188714, 377428, 471785, 943570, 1037927, 1887140, 2075854, 4151708, 5189635, 10379270, 20758540]

約数ペア:

[(1, 20758540), (2, 10379270), (4, 5189635), (5, 4151708), (10, 2075854), (11, 1887140), (20, 1037927), (22, 943570), (44, 471785), (55, 377428), (110, 188714), (157, 132220), (220, 94357), (314, 66110), (601, 34540), (628, 33055), (785, 26444), (1202, 17270), (1570, 13222), (1727, 12020), (2404, 8635), (3005, 6908), (3140, 6611), (3454, 6010)]