21086640

素因数分解:

$2^4\times 3^2\times 5^1\times {\mathrm{29287}}^1$

素因数の和:29306

約数の個数: 60

約数和(自身を含む): 70818384

約数和(自身を除く): 49731744

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, 29287, 58574, 87861, 117148, 146435, 175722, 234296, 263583, 292870, 351444, 439305, 468592, 527166, 585740, 702888, 878610, 1054332, 1171480, 1317915, 1405776, 1757220, 2108664, 2342960, 2635830, 3514440, 4217328, 5271660, 7028880, 10543320, 21086640]

約数ペア:

[(1, 21086640), (2, 10543320), (3, 7028880), (4, 5271660), (5, 4217328), (6, 3514440), (8, 2635830), (9, 2342960), (10, 2108664), (12, 1757220), (15, 1405776), (16, 1317915), (18, 1171480), (20, 1054332), (24, 878610), (30, 702888), (36, 585740), (40, 527166), (45, 468592), (48, 439305), (60, 351444), (72, 292870), (80, 263583), (90, 234296), (120, 175722), (144, 146435), (180, 117148), (240, 87861), (360, 58574), (720, 29287)]