280489250

素因数分解:

$2^1\times 5^3\times {\mathrm{53}}^1\times {\mathrm{21169}}^1$

素因数の和:21239

約数の個数: 32

約数和(自身を含む): 535008240

約数和(自身を除く): 254518990

約数列:

[1, 2, 5, 10, 25, 50, 53, 106, 125, 250, 265, 530, 1325, 2650, 6625, 13250, 21169, 42338, 105845, 211690, 529225, 1058450, 1121957, 2243914, 2646125, 5292250, 5609785, 11219570, 28048925, 56097850, 140244625, 280489250]

約数ペア:

[(1, 280489250), (2, 140244625), (5, 56097850), (10, 28048925), (25, 11219570), (50, 5609785), (53, 5292250), (106, 2646125), (125, 2243914), (250, 1121957), (265, 1058450), (530, 529225), (1325, 211690), (2650, 105845), (6625, 42338), (13250, 21169)]