20017928

素因数分解:

$2^3\times 7^1\times {\mathrm{179}}^1\times {\mathrm{1997}}^1$

素因数の和:2189

約数の個数: 32

約数和(自身を含む): 43156800

約数和(自身を除く): 23138872

約数列:

[1, 2, 4, 7, 8, 14, 28, 56, 179, 358, 716, 1253, 1432, 1997, 2506, 3994, 5012, 7988, 10024, 13979, 15976, 27958, 55916, 111832, 357463, 714926, 1429852, 2502241, 2859704, 5004482, 10008964, 20017928]

約数ペア:

[(1, 20017928), (2, 10008964), (4, 5004482), (7, 2859704), (8, 2502241), (14, 1429852), (28, 714926), (56, 357463), (179, 111832), (358, 55916), (716, 27958), (1253, 15976), (1432, 13979), (1997, 10024), (2506, 7988), (3994, 5012)]