21990642

素因数分解:

$2^1\times 3^1\times {\mathrm{29}}^1\times {\mathrm{47}}^1\times {\mathrm{2689}}^1$

素因数の和:2770

約数の個数: 32

約数和(自身を含む): 46483200

約数和(自身を除く): 24492558

約数列:

[1, 2, 3, 6, 29, 47, 58, 87, 94, 141, 174, 282, 1363, 2689, 2726, 4089, 5378, 8067, 8178, 16134, 77981, 126383, 155962, 233943, 252766, 379149, 467886, 758298, 3665107, 7330214, 10995321, 21990642]

約数ペア:

[(1, 21990642), (2, 10995321), (3, 7330214), (6, 3665107), (29, 758298), (47, 467886), (58, 379149), (87, 252766), (94, 233943), (141, 155962), (174, 126383), (282, 77981), (1363, 16134), (2689, 8178), (2726, 8067), (4089, 5378)]