21000994553

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{103}}^1\times {\mathrm{491}}^1\times {\mathrm{5393}}^1$

素因数の和:6005

約数の個数: 32

約数和(自身を含む): 26496018432

約数和(自身を除く): 5495023879

約数列:

[1, 7, 11, 77, 103, 491, 721, 1133, 3437, 5393, 5401, 7931, 37751, 37807, 50573, 59323, 354011, 415261, 555479, 556303, 2647963, 3888353, 3894121, 6110269, 18535741, 29127593, 42771883, 203893151, 272740189, 1909181323, 3000142079, 21000994553]

約数ペア:

[(1, 21000994553), (7, 3000142079), (11, 1909181323), (77, 272740189), (103, 203893151), (491, 42771883), (721, 29127593), (1133, 18535741), (3437, 6110269), (5393, 3894121), (5401, 3888353), (7931, 2647963), (37751, 556303), (37807, 555479), (50573, 415261), (59323, 354011)]