18989900

素因数分解:

$2^2\times 5^2\times {\mathrm{53}}^1\times {\mathrm{3583}}^1$

素因数の和:3650

約数の個数: 36

約数和(自身を含む): 41997312

約数和(自身を除く): 23007412

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 53, 100, 106, 212, 265, 530, 1060, 1325, 2650, 3583, 5300, 7166, 14332, 17915, 35830, 71660, 89575, 179150, 189899, 358300, 379798, 759596, 949495, 1898990, 3797980, 4747475, 9494950, 18989900]

約数ペア:

[(1, 18989900), (2, 9494950), (4, 4747475), (5, 3797980), (10, 1898990), (20, 949495), (25, 759596), (50, 379798), (53, 358300), (100, 189899), (106, 179150), (212, 89575), (265, 71660), (530, 35830), (1060, 17915), (1325, 14332), (2650, 7166), (3583, 5300)]