21115680

素因数分解:

$2^5\times 3^1\times 5^1\times {\mathrm{43991}}^1$

素因数の和:44009

約数の個数: 48

約数和(自身を含む): 66515904

約数和(自身を除く): 45400224

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, 43991, 87982, 131973, 175964, 219955, 263946, 351928, 439910, 527892, 659865, 703856, 879820, 1055784, 1319730, 1407712, 1759640, 2111568, 2639460, 3519280, 4223136, 5278920, 7038560, 10557840, 21115680]

約数ペア:

[(1, 21115680), (2, 10557840), (3, 7038560), (4, 5278920), (5, 4223136), (6, 3519280), (8, 2639460), (10, 2111568), (12, 1759640), (15, 1407712), (16, 1319730), (20, 1055784), (24, 879820), (30, 703856), (32, 659865), (40, 527892), (48, 439910), (60, 351928), (80, 263946), (96, 219955), (120, 175964), (160, 131973), (240, 87982), (480, 43991)]