20784652

素因数分解:

$2^2\times 7^1\times {\mathrm{43}}^1\times {\mathrm{61}}^1\times {\mathrm{283}}^1$

素因数の和:398

約数の個数: 48

約数和(自身を含む): 43386112

約数和(自身を除く): 22601460

約数列:

[1, 2, 4, 7, 14, 28, 43, 61, 86, 122, 172, 244, 283, 301, 427, 566, 602, 854, 1132, 1204, 1708, 1981, 2623, 3962, 5246, 7924, 10492, 12169, 17263, 18361, 24338, 34526, 36722, 48676, 69052, 73444, 85183, 120841, 170366, 241682, 340732, 483364, 742309, 1484618, 2969236, 5196163, 10392326, 20784652]

約数ペア:

[(1, 20784652), (2, 10392326), (4, 5196163), (7, 2969236), (14, 1484618), (28, 742309), (43, 483364), (61, 340732), (86, 241682), (122, 170366), (172, 120841), (244, 85183), (283, 73444), (301, 69052), (427, 48676), (566, 36722), (602, 34526), (854, 24338), (1132, 18361), (1204, 17263), (1708, 12169), (1981, 10492), (2623, 7924), (3962, 5246)]