818294480

素因数分解:

$2^4\times 5^1\times {\mathrm{89}}^1\times {\mathrm{281}}^1\times {\mathrm{409}}^1$

素因数の和:792

約数の個数: 80

約数和(自身を含む): 1935478800

約数和(自身を除く): 1117184320

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 89, 178, 281, 356, 409, 445, 562, 712, 818, 890, 1124, 1405, 1424, 1636, 1780, 2045, 2248, 2810, 3272, 3560, 4090, 4496, 5620, 6544, 7120, 8180, 11240, 16360, 22480, 25009, 32720, 36401, 50018, 72802, 100036, 114929, 125045, 145604, 182005, 200072, 229858, 250090, 291208, 364010, 400144, 459716, 500180, 574645, 582416, 728020, 919432, 1000360, 1149290, 1456040, 1838864, 2000720, 2298580, 2912080, 4597160, 9194320, 10228681, 20457362, 40914724, 51143405, 81829448, 102286810, 163658896, 204573620, 409147240, 818294480]

約数ペア:

[(1, 818294480), (2, 409147240), (4, 204573620), (5, 163658896), (8, 102286810), (10, 81829448), (16, 51143405), (20, 40914724), (40, 20457362), (80, 10228681), (89, 9194320), (178, 4597160), (281, 2912080), (356, 2298580), (409, 2000720), (445, 1838864), (562, 1456040), (712, 1149290), (818, 1000360), (890, 919432), (1124, 728020), (1405, 582416), (1424, 574645), (1636, 500180), (1780, 459716), (2045, 400144), (2248, 364010), (2810, 291208), (3272, 250090), (3560, 229858), (4090, 200072), (4496, 182005), (5620, 145604), (6544, 125045), (7120, 114929), (8180, 100036), (11240, 72802), (16360, 50018), (22480, 36401), (25009, 32720)]