38978440

素因数分解:

$2^3\times 5^1\times {\mathrm{89}}^1\times {\mathrm{10949}}^1$

素因数の和:11049

約数の個数: 32

約数和(自身を含む): 88695000

約数和(自身を除く): 49716560

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 89, 178, 356, 445, 712, 890, 1780, 3560, 10949, 21898, 43796, 54745, 87592, 109490, 218980, 437960, 974461, 1948922, 3897844, 4872305, 7795688, 9744610, 19489220, 38978440]

約数ペア:

[(1, 38978440), (2, 19489220), (4, 9744610), (5, 7795688), (8, 4872305), (10, 3897844), (20, 1948922), (40, 974461), (89, 437960), (178, 218980), (356, 109490), (445, 87592), (712, 54745), (890, 43796), (1780, 21898), (3560, 10949)]