87478840

素因数分解:

$2^3\times 5^1\times {\mathrm{163}}^1\times {\mathrm{13417}}^1$

素因数の和:13591

約数の個数: 32

約数和(自身を含む): 198049680

約数和(自身を除く): 110570840

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 163, 326, 652, 815, 1304, 1630, 3260, 6520, 13417, 26834, 53668, 67085, 107336, 134170, 268340, 536680, 2186971, 4373942, 8747884, 10934855, 17495768, 21869710, 43739420, 87478840]

約数ペア:

[(1, 87478840), (2, 43739420), (4, 21869710), (5, 17495768), (8, 10934855), (10, 8747884), (20, 4373942), (40, 2186971), (163, 536680), (326, 268340), (652, 134170), (815, 107336), (1304, 67085), (1630, 53668), (3260, 26834), (6520, 13417)]