20784240

素因数分解:

$2^4\times 3^2\times 5^1\times {\mathrm{28867}}^1$

素因数の和:28886

約数の個数: 60

約数和(自身を含む): 69802824

約数和(自身を除く): 49018584

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 30, 36, 40, 45, 48, 60, 72, 80, 90, 120, 144, 180, 240, 360, 720, 28867, 57734, 86601, 115468, 144335, 173202, 230936, 259803, 288670, 346404, 433005, 461872, 519606, 577340, 692808, 866010, 1039212, 1154680, 1299015, 1385616, 1732020, 2078424, 2309360, 2598030, 3464040, 4156848, 5196060, 6928080, 10392120, 20784240]

約数ペア:

[(1, 20784240), (2, 10392120), (3, 6928080), (4, 5196060), (5, 4156848), (6, 3464040), (8, 2598030), (9, 2309360), (10, 2078424), (12, 1732020), (15, 1385616), (16, 1299015), (18, 1154680), (20, 1039212), (24, 866010), (30, 692808), (36, 577340), (40, 519606), (45, 461872), (48, 433005), (60, 346404), (72, 288670), (80, 259803), (90, 230936), (120, 173202), (144, 144335), (180, 115468), (240, 86601), (360, 57734), (720, 28867)]