81821984

素因数分解:

$2^5\times {\mathrm{61}}^1\times {\mathrm{167}}^1\times {\mathrm{251}}^1$

素因数の和:489

約数の個数: 48

約数和(自身を含む): 165364416

約数和(自身を除く): 83542432

約数列:

[1, 2, 4, 8, 16, 32, 61, 122, 167, 244, 251, 334, 488, 502, 668, 976, 1004, 1336, 1952, 2008, 2672, 4016, 5344, 8032, 10187, 15311, 20374, 30622, 40748, 41917, 61244, 81496, 83834, 122488, 162992, 167668, 244976, 325984, 335336, 489952, 670672, 1341344, 2556937, 5113874, 10227748, 20455496, 40910992, 81821984]

約数ペア:

[(1, 81821984), (2, 40910992), (4, 20455496), (8, 10227748), (16, 5113874), (32, 2556937), (61, 1341344), (122, 670672), (167, 489952), (244, 335336), (251, 325984), (334, 244976), (488, 167668), (502, 162992), (668, 122488), (976, 83834), (1004, 81496), (1336, 61244), (1952, 41917), (2008, 40748), (2672, 30622), (4016, 20374), (5344, 15311), (8032, 10187)]