201781960

素因数分解:

$2^3\times 5^1\times {\mathrm{439}}^1\times {\mathrm{11491}}^1$

素因数の和:11941

約数の個数: 32

約数和(自身を含む): 455083200

約数和(自身を除く): 253301240

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 439, 878, 1756, 2195, 3512, 4390, 8780, 11491, 17560, 22982, 45964, 57455, 91928, 114910, 229820, 459640, 5044549, 10089098, 20178196, 25222745, 40356392, 50445490, 100890980, 201781960]

約数ペア:

[(1, 201781960), (2, 100890980), (4, 50445490), (5, 40356392), (8, 25222745), (10, 20178196), (20, 10089098), (40, 5044549), (439, 459640), (878, 229820), (1756, 114910), (2195, 91928), (3512, 57455), (4390, 45964), (8780, 22982), (11491, 17560)]