21042420

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{50101}}^1$

素因数の和:50120

約数の個数: 48

約数和(自身を含む): 67337088

約数和(自身を除く): 46294668

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, 50101, 100202, 150303, 200404, 250505, 300606, 350707, 501010, 601212, 701414, 751515, 1002020, 1052121, 1402828, 1503030, 1753535, 2104242, 3006060, 3507070, 4208484, 5260605, 7014140, 10521210, 21042420]

約数ペア:

[(1, 21042420), (2, 10521210), (3, 7014140), (4, 5260605), (5, 4208484), (6, 3507070), (7, 3006060), (10, 2104242), (12, 1753535), (14, 1503030), (15, 1402828), (20, 1052121), (21, 1002020), (28, 751515), (30, 701414), (35, 601212), (42, 501010), (60, 350707), (70, 300606), (84, 250505), (105, 200404), (140, 150303), (210, 100202), (420, 50101)]