21426795

素因数分解:

$3^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{421}}^1$

素因数の和:477

約数の個数: 64

約数和(自身を含む): 42537600

約数和(自身を除く): 21110805

約数列:

[1, 3, 5, 9, 13, 15, 27, 29, 39, 45, 65, 87, 117, 135, 145, 195, 261, 351, 377, 421, 435, 585, 783, 1131, 1263, 1305, 1755, 1885, 2105, 3393, 3789, 3915, 5473, 5655, 6315, 10179, 11367, 12209, 16419, 16965, 18945, 27365, 36627, 49257, 50895, 56835, 61045, 82095, 109881, 147771, 158717, 183135, 246285, 329643, 476151, 549405, 738855, 793585, 1428453, 1648215, 2380755, 4285359, 7142265, 21426795]

約数ペア:

[(1, 21426795), (3, 7142265), (5, 4285359), (9, 2380755), (13, 1648215), (15, 1428453), (27, 793585), (29, 738855), (39, 549405), (45, 476151), (65, 329643), (87, 246285), (117, 183135), (135, 158717), (145, 147771), (195, 109881), (261, 82095), (351, 61045), (377, 56835), (421, 50895), (435, 49257), (585, 36627), (783, 27365), (1131, 18945), (1263, 16965), (1305, 16419), (1755, 12209), (1885, 11367), (2105, 10179), (3393, 6315), (3789, 5655), (3915, 5473)]