21113760

素因数分解:

$2^5\times 3^1\times 5^1\times {\mathrm{43987}}^1$

素因数の和:44005

約数の個数: 48

約数和(自身を含む): 66509856

約数和(自身を除く): 45396096

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 32, 40, 48, 60, 80, 96, 120, 160, 240, 480, 43987, 87974, 131961, 175948, 219935, 263922, 351896, 439870, 527844, 659805, 703792, 879740, 1055688, 1319610, 1407584, 1759480, 2111376, 2639220, 3518960, 4222752, 5278440, 7037920, 10556880, 21113760]

約数ペア:

[(1, 21113760), (2, 10556880), (3, 7037920), (4, 5278440), (5, 4222752), (6, 3518960), (8, 2639220), (10, 2111376), (12, 1759480), (15, 1407584), (16, 1319610), (20, 1055688), (24, 879740), (30, 703792), (32, 659805), (40, 527844), (48, 439870), (60, 351896), (80, 263922), (96, 219935), (120, 175948), (160, 131961), (240, 87974), (480, 43987)]