21021420

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{50051}}^1$

素因数の和:50070

約数の個数: 48

約数和(自身を含む): 67269888

約数和(自身を除く): 46248468

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 60, 70, 84, 105, 140, 210, 420, 50051, 100102, 150153, 200204, 250255, 300306, 350357, 500510, 600612, 700714, 750765, 1001020, 1051071, 1401428, 1501530, 1751785, 2102142, 3003060, 3503570, 4204284, 5255355, 7007140, 10510710, 21021420]

約数ペア:

[(1, 21021420), (2, 10510710), (3, 7007140), (4, 5255355), (5, 4204284), (6, 3503570), (7, 3003060), (10, 2102142), (12, 1751785), (14, 1501530), (15, 1401428), (20, 1051071), (21, 1001020), (28, 750765), (30, 700714), (35, 600612), (42, 500510), (60, 350357), (70, 300306), (84, 250255), (105, 200204), (140, 150153), (210, 100102), (420, 50051)]