21982012

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{19}}^2\times {\mathrm{1171}}^1$

素因数の和:1226

約数の個数: 36

約数和(自身を含む): 43760136

約数和(自身を除く): 21778124

約数列:

[1, 2, 4, 13, 19, 26, 38, 52, 76, 247, 361, 494, 722, 988, 1171, 1444, 2342, 4684, 4693, 9386, 15223, 18772, 22249, 30446, 44498, 60892, 88996, 289237, 422731, 578474, 845462, 1156948, 1690924, 5495503, 10991006, 21982012]

約数ペア:

[(1, 21982012), (2, 10991006), (4, 5495503), (13, 1690924), (19, 1156948), (26, 845462), (38, 578474), (52, 422731), (76, 289237), (247, 88996), (361, 60892), (494, 44498), (722, 30446), (988, 22249), (1171, 18772), (1444, 15223), (2342, 9386), (4684, 4693)]