21231420

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{50551}}^1$

素因数の和:50570

約数の個数: 48

約数和(自身を含む): 67941888

約数和(自身を除く): 46710468

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, 50551, 101102, 151653, 202204, 252755, 303306, 353857, 505510, 606612, 707714, 758265, 1011020, 1061571, 1415428, 1516530, 1769285, 2123142, 3033060, 3538570, 4246284, 5307855, 7077140, 10615710, 21231420]

約数ペア:

[(1, 21231420), (2, 10615710), (3, 7077140), (4, 5307855), (5, 4246284), (6, 3538570), (7, 3033060), (10, 2123142), (12, 1769285), (14, 1516530), (15, 1415428), (20, 1061571), (21, 1011020), (28, 758265), (30, 707714), (35, 606612), (42, 505510), (60, 353857), (70, 303306), (84, 252755), (105, 202204), (140, 151653), (210, 101102), (420, 50551)]