28011890

素因数分解:

$2^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{379}}^1\times {\mathrm{389}}^1$

素因数の和:794

約数の個数: 32

約数和(自身を含む): 53352000

約数和(自身を除く): 25340110

約数列:

[1, 2, 5, 10, 19, 38, 95, 190, 379, 389, 758, 778, 1895, 1945, 3790, 3890, 7201, 7391, 14402, 14782, 36005, 36955, 72010, 73910, 147431, 294862, 737155, 1474310, 2801189, 5602378, 14005945, 28011890]

約数ペア:

[(1, 28011890), (2, 14005945), (5, 5602378), (10, 2801189), (19, 1474310), (38, 737155), (95, 294862), (190, 147431), (379, 73910), (389, 72010), (758, 36955), (778, 36005), (1895, 14782), (1945, 14402), (3790, 7391), (3890, 7201)]