18886280

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{37}}^1\times {\mathrm{1823}}^1$

素因数の和:1878

約数の個数: 64

約数和(自身を含む): 49904640

約数和(自身を除く): 31018360

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 37, 40, 56, 70, 74, 140, 148, 185, 259, 280, 296, 370, 518, 740, 1036, 1295, 1480, 1823, 2072, 2590, 3646, 5180, 7292, 9115, 10360, 12761, 14584, 18230, 25522, 36460, 51044, 63805, 67451, 72920, 102088, 127610, 134902, 255220, 269804, 337255, 472157, 510440, 539608, 674510, 944314, 1349020, 1888628, 2360785, 2698040, 3777256, 4721570, 9443140, 18886280]

約数ペア:

[(1, 18886280), (2, 9443140), (4, 4721570), (5, 3777256), (7, 2698040), (8, 2360785), (10, 1888628), (14, 1349020), (20, 944314), (28, 674510), (35, 539608), (37, 510440), (40, 472157), (56, 337255), (70, 269804), (74, 255220), (140, 134902), (148, 127610), (185, 102088), (259, 72920), (280, 67451), (296, 63805), (370, 51044), (518, 36460), (740, 25522), (1036, 18230), (1295, 14584), (1480, 12761), (1823, 10360), (2072, 9115), (2590, 7292), (3646, 5180)]