20800724

素因数分解:

$2^2\times 7^1\times {\mathrm{17}}^1\times {\mathrm{89}}^1\times {\mathrm{491}}^1$

素因数の和:608

約数の個数: 48

約数和(自身を含む): 44634240

約数和(自身を除く): 23833516

約数列:

[1, 2, 4, 7, 14, 17, 28, 34, 68, 89, 119, 178, 238, 356, 476, 491, 623, 982, 1246, 1513, 1964, 2492, 3026, 3437, 6052, 6874, 8347, 10591, 13748, 16694, 21182, 33388, 42364, 43699, 58429, 87398, 116858, 174796, 233716, 305893, 611786, 742883, 1223572, 1485766, 2971532, 5200181, 10400362, 20800724]

約数ペア:

[(1, 20800724), (2, 10400362), (4, 5200181), (7, 2971532), (14, 1485766), (17, 1223572), (28, 742883), (34, 611786), (68, 305893), (89, 233716), (119, 174796), (178, 116858), (238, 87398), (356, 58429), (476, 43699), (491, 42364), (623, 33388), (982, 21182), (1246, 16694), (1513, 13748), (1964, 10591), (2492, 8347), (3026, 6874), (3437, 6052)]