21319988

素因数分解:

$2^2\times {\mathrm{23}}^1\times {\mathrm{29}}^1\times {\mathrm{61}}^1\times {\mathrm{131}}^1$

素因数の和:248

約数の個数: 48

約数和(自身を含む): 41247360

約数和(自身を除く): 19927372

約数列:

[1, 2, 4, 23, 29, 46, 58, 61, 92, 116, 122, 131, 244, 262, 524, 667, 1334, 1403, 1769, 2668, 2806, 3013, 3538, 3799, 5612, 6026, 7076, 7598, 7991, 12052, 15196, 15982, 31964, 40687, 81374, 87377, 162748, 174754, 183793, 231739, 349508, 367586, 463478, 735172, 926956, 5329997, 10659994, 21319988]

約数ペア:

[(1, 21319988), (2, 10659994), (4, 5329997), (23, 926956), (29, 735172), (46, 463478), (58, 367586), (61, 349508), (92, 231739), (116, 183793), (122, 174754), (131, 162748), (244, 87377), (262, 81374), (524, 40687), (667, 31964), (1334, 15982), (1403, 15196), (1769, 12052), (2668, 7991), (2806, 7598), (3013, 7076), (3538, 6026), (3799, 5612)]