128747920

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{149}}^1\times {\mathrm{1543}}^1$

素因数の和:1712

約数の個数: 80

約数和(自身を含む): 344620800

約数和(自身を除く): 215872880

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 56, 70, 80, 112, 140, 149, 280, 298, 560, 596, 745, 1043, 1192, 1490, 1543, 2086, 2384, 2980, 3086, 4172, 5215, 5960, 6172, 7715, 8344, 10430, 10801, 11920, 12344, 15430, 16688, 20860, 21602, 24688, 30860, 41720, 43204, 54005, 61720, 83440, 86408, 108010, 123440, 172816, 216020, 229907, 432040, 459814, 864080, 919628, 1149535, 1609349, 1839256, 2299070, 3218698, 3678512, 4598140, 6437396, 8046745, 9196280, 12874792, 16093490, 18392560, 25749584, 32186980, 64373960, 128747920]

約数ペア:

[(1, 128747920), (2, 64373960), (4, 32186980), (5, 25749584), (7, 18392560), (8, 16093490), (10, 12874792), (14, 9196280), (16, 8046745), (20, 6437396), (28, 4598140), (35, 3678512), (40, 3218698), (56, 2299070), (70, 1839256), (80, 1609349), (112, 1149535), (140, 919628), (149, 864080), (280, 459814), (298, 432040), (560, 229907), (596, 216020), (745, 172816), (1043, 123440), (1192, 108010), (1490, 86408), (1543, 83440), (2086, 61720), (2384, 54005), (2980, 43204), (3086, 41720), (4172, 30860), (5215, 24688), (5960, 21602), (6172, 20860), (7715, 16688), (8344, 15430), (10430, 12344), (10801, 11920)]