21279972

素因数分解:

$2^2\times 3^1\times 7^1\times {\mathrm{61}}^1\times {\mathrm{4153}}^1$

素因数の和:4228

約数の個数: 48

約数和(自身を含む): 57690752

約数和(自身を除く): 36410780

約数列:

[1, 2, 3, 4, 6, 7, 12, 14, 21, 28, 42, 61, 84, 122, 183, 244, 366, 427, 732, 854, 1281, 1708, 2562, 4153, 5124, 8306, 12459, 16612, 24918, 29071, 49836, 58142, 87213, 116284, 174426, 253333, 348852, 506666, 759999, 1013332, 1519998, 1773331, 3039996, 3546662, 5319993, 7093324, 10639986, 21279972]

約数ペア:

[(1, 21279972), (2, 10639986), (3, 7093324), (4, 5319993), (6, 3546662), (7, 3039996), (12, 1773331), (14, 1519998), (21, 1013332), (28, 759999), (42, 506666), (61, 348852), (84, 253333), (122, 174426), (183, 116284), (244, 87213), (366, 58142), (427, 49836), (732, 29071), (854, 24918), (1281, 16612), (1708, 12459), (2562, 8306), (4153, 5124)]