78667480

素因数分解:

$2^3\times 5^1\times {\mathrm{109}}^1\times {\mathrm{18043}}^1$

素因数の和:18163

約数の個数: 32

約数和(自身を含む): 178635600

約数和(自身を除く): 99968120

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 109, 218, 436, 545, 872, 1090, 2180, 4360, 18043, 36086, 72172, 90215, 144344, 180430, 360860, 721720, 1966687, 3933374, 7866748, 9833435, 15733496, 19666870, 39333740, 78667480]

約数ペア:

[(1, 78667480), (2, 39333740), (4, 19666870), (5, 15733496), (8, 9833435), (10, 7866748), (20, 3933374), (40, 1966687), (109, 721720), (218, 360860), (436, 180430), (545, 144344), (872, 90215), (1090, 72172), (2180, 36086), (4360, 18043)]