20534920

素因数分解:

$2^3\times 5^1\times 7^2\times {\mathrm{10477}}^1$

素因数の和:10502

約数の個数: 48

約数和(自身を含む): 53752140

約数和(自身を除く): 33217220

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 49, 56, 70, 98, 140, 196, 245, 280, 392, 490, 980, 1960, 10477, 20954, 41908, 52385, 73339, 83816, 104770, 146678, 209540, 293356, 366695, 419080, 513373, 586712, 733390, 1026746, 1466780, 2053492, 2566865, 2933560, 4106984, 5133730, 10267460, 20534920]

約数ペア:

[(1, 20534920), (2, 10267460), (4, 5133730), (5, 4106984), (7, 2933560), (8, 2566865), (10, 2053492), (14, 1466780), (20, 1026746), (28, 733390), (35, 586712), (40, 513373), (49, 419080), (56, 366695), (70, 293356), (98, 209540), (140, 146678), (196, 104770), (245, 83816), (280, 73339), (392, 52385), (490, 41908), (980, 20954), (1960, 10477)]