128908840

素因数分解:

$2^3\times 5^1\times {\mathrm{43}}^1\times {\mathrm{149}}^1\times {\mathrm{503}}^1$

素因数の和:706

約数の個数: 64

約数和(自身を含む): 299376000

約数和(自身を除く): 170467160

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 43, 86, 149, 172, 215, 298, 344, 430, 503, 596, 745, 860, 1006, 1192, 1490, 1720, 2012, 2515, 2980, 4024, 5030, 5960, 6407, 10060, 12814, 20120, 21629, 25628, 32035, 43258, 51256, 64070, 74947, 86516, 108145, 128140, 149894, 173032, 216290, 256280, 299788, 374735, 432580, 599576, 749470, 865160, 1498940, 2997880, 3222721, 6445442, 12890884, 16113605, 25781768, 32227210, 64454420, 128908840]

約数ペア:

[(1, 128908840), (2, 64454420), (4, 32227210), (5, 25781768), (8, 16113605), (10, 12890884), (20, 6445442), (40, 3222721), (43, 2997880), (86, 1498940), (149, 865160), (172, 749470), (215, 599576), (298, 432580), (344, 374735), (430, 299788), (503, 256280), (596, 216290), (745, 173032), (860, 149894), (1006, 128140), (1192, 108145), (1490, 86516), (1720, 74947), (2012, 64070), (2515, 51256), (2980, 43258), (4024, 32035), (5030, 25628), (5960, 21629), (6407, 20120), (10060, 12814)]