671721988

素因数分解:

$2^2\times 7^2\times {\mathrm{83}}^1\times {\mathrm{157}}^1\times {\mathrm{263}}^1$

素因数の和:521

約数の個数: 72

約数和(自身を含む): 1398019392

約数和(自身を除く): 726297404

約数列:

[1, 2, 4, 7, 14, 28, 49, 83, 98, 157, 166, 196, 263, 314, 332, 526, 581, 628, 1052, 1099, 1162, 1841, 2198, 2324, 3682, 4067, 4396, 7364, 7693, 8134, 12887, 13031, 15386, 16268, 21829, 25774, 26062, 30772, 41291, 43658, 51548, 52124, 82582, 87316, 91217, 152803, 165164, 182434, 289037, 305606, 364868, 578074, 611212, 638519, 1069621, 1156148, 1277038, 2023259, 2139242, 2554076, 3427153, 4046518, 4278484, 6854306, 8093036, 13708612, 23990071, 47980142, 95960284, 167930497, 335860994, 671721988]

約数ペア:

[(1, 671721988), (2, 335860994), (4, 167930497), (7, 95960284), (14, 47980142), (28, 23990071), (49, 13708612), (83, 8093036), (98, 6854306), (157, 4278484), (166, 4046518), (196, 3427153), (263, 2554076), (314, 2139242), (332, 2023259), (526, 1277038), (581, 1156148), (628, 1069621), (1052, 638519), (1099, 611212), (1162, 578074), (1841, 364868), (2198, 305606), (2324, 289037), (3682, 182434), (4067, 165164), (4396, 152803), (7364, 91217), (7693, 87316), (8134, 82582), (12887, 52124), (13031, 51548), (15386, 43658), (16268, 41291), (21829, 30772), (25774, 26062)]