78231440

素因数分解:

$2^4\times 5^1\times 7^3\times {\mathrm{2851}}^1$

素因数の和:2885

約数の個数: 80

約数和(自身を含む): 212188800

約数和(自身を除く): 133957360

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 49, 56, 70, 80, 98, 112, 140, 196, 245, 280, 343, 392, 490, 560, 686, 784, 980, 1372, 1715, 1960, 2744, 2851, 3430, 3920, 5488, 5702, 6860, 11404, 13720, 14255, 19957, 22808, 27440, 28510, 39914, 45616, 57020, 79828, 99785, 114040, 139699, 159656, 199570, 228080, 279398, 319312, 399140, 558796, 698495, 798280, 977893, 1117592, 1396990, 1596560, 1955786, 2235184, 2793980, 3911572, 4889465, 5587960, 7823144, 9778930, 11175920, 15646288, 19557860, 39115720, 78231440]

約数ペア:

[(1, 78231440), (2, 39115720), (4, 19557860), (5, 15646288), (7, 11175920), (8, 9778930), (10, 7823144), (14, 5587960), (16, 4889465), (20, 3911572), (28, 2793980), (35, 2235184), (40, 1955786), (49, 1596560), (56, 1396990), (70, 1117592), (80, 977893), (98, 798280), (112, 698495), (140, 558796), (196, 399140), (245, 319312), (280, 279398), (343, 228080), (392, 199570), (490, 159656), (560, 139699), (686, 114040), (784, 99785), (980, 79828), (1372, 57020), (1715, 45616), (1960, 39914), (2744, 28510), (2851, 27440), (3430, 22808), (3920, 19957), (5488, 14255), (5702, 13720), (6860, 11404)]