21750290

素因数分解:

$2^1\times 5^1\times {\mathrm{29}}^1\times {\mathrm{179}}^1\times {\mathrm{419}}^1$

素因数の和:634

約数の個数: 32

約数和(自身を含む): 40824000

約数和(自身を除く): 19073710

約数列:

[1, 2, 5, 10, 29, 58, 145, 179, 290, 358, 419, 838, 895, 1790, 2095, 4190, 5191, 10382, 12151, 24302, 25955, 51910, 60755, 75001, 121510, 150002, 375005, 750010, 2175029, 4350058, 10875145, 21750290]

約数ペア:

[(1, 21750290), (2, 10875145), (5, 4350058), (10, 2175029), (29, 750010), (58, 375005), (145, 150002), (179, 121510), (290, 75001), (358, 60755), (419, 51910), (838, 25955), (895, 24302), (1790, 12151), (2095, 10382), (4190, 5191)]