816138320

素因数分解:

$2^4\times 5^1\times {\mathrm{449}}^1\times {\mathrm{22721}}^1$

素因数の和:23183

約数の個数: 40

約数和(自身を含む): 1901831400

約数和(自身を除く): 1085693080

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 449, 898, 1796, 2245, 3592, 4490, 7184, 8980, 17960, 22721, 35920, 45442, 90884, 113605, 181768, 227210, 363536, 454420, 908840, 1817680, 10201729, 20403458, 40806916, 51008645, 81613832, 102017290, 163227664, 204034580, 408069160, 816138320]

約数ペア:

[(1, 816138320), (2, 408069160), (4, 204034580), (5, 163227664), (8, 102017290), (10, 81613832), (16, 51008645), (20, 40806916), (40, 20403458), (80, 10201729), (449, 1817680), (898, 908840), (1796, 454420), (2245, 363536), (3592, 227210), (4490, 181768), (7184, 113605), (8980, 90884), (17960, 45442), (22721, 35920)]