20651778

素因数分解:

$2^1\times 3^2\times 7^1\times {\mathrm{251}}^1\times {\mathrm{653}}^1$

素因数の和:919

約数の個数: 48

約数和(自身を含む): 51420096

約数和(自身を除く): 30768318

約数列:

[1, 2, 3, 6, 7, 9, 14, 18, 21, 42, 63, 126, 251, 502, 653, 753, 1306, 1506, 1757, 1959, 2259, 3514, 3918, 4518, 4571, 5271, 5877, 9142, 10542, 11754, 13713, 15813, 27426, 31626, 41139, 82278, 163903, 327806, 491709, 983418, 1147321, 1475127, 2294642, 2950254, 3441963, 6883926, 10325889, 20651778]

約数ペア:

[(1, 20651778), (2, 10325889), (3, 6883926), (6, 3441963), (7, 2950254), (9, 2294642), (14, 1475127), (18, 1147321), (21, 983418), (42, 491709), (63, 327806), (126, 163903), (251, 82278), (502, 41139), (653, 31626), (753, 27426), (1306, 15813), (1506, 13713), (1757, 11754), (1959, 10542), (2259, 9142), (3514, 5877), (3918, 5271), (4518, 4571)]