21205680

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{149}}^1\times {\mathrm{593}}^1$

素因数の和:758

約数の個数: 80

約数和(自身を含む): 66290400

約数和(自身を除く): 45084720

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 40, 48, 60, 80, 120, 149, 240, 298, 447, 593, 596, 745, 894, 1186, 1192, 1490, 1779, 1788, 2235, 2372, 2384, 2965, 2980, 3558, 3576, 4470, 4744, 5930, 5960, 7116, 7152, 8895, 8940, 9488, 11860, 11920, 14232, 17790, 17880, 23720, 28464, 35580, 35760, 47440, 71160, 88357, 142320, 176714, 265071, 353428, 441785, 530142, 706856, 883570, 1060284, 1325355, 1413712, 1767140, 2120568, 2650710, 3534280, 4241136, 5301420, 7068560, 10602840, 21205680]

約数ペア:

[(1, 21205680), (2, 10602840), (3, 7068560), (4, 5301420), (5, 4241136), (6, 3534280), (8, 2650710), (10, 2120568), (12, 1767140), (15, 1413712), (16, 1325355), (20, 1060284), (24, 883570), (30, 706856), (40, 530142), (48, 441785), (60, 353428), (80, 265071), (120, 176714), (149, 142320), (240, 88357), (298, 71160), (447, 47440), (593, 35760), (596, 35580), (745, 28464), (894, 23720), (1186, 17880), (1192, 17790), (1490, 14232), (1779, 11920), (1788, 11860), (2235, 9488), (2372, 8940), (2384, 8895), (2965, 7152), (2980, 7116), (3558, 5960), (3576, 5930), (4470, 4744)]