81301250

素因数分解:

$2^1\times 5^4\times {\mathrm{193}}^1\times {\mathrm{337}}^1$

素因数の和:552

約数の個数: 40

約数和(自身を含む): 153635196

約数和(自身を除く): 72333946

約数列:

[1, 2, 5, 10, 25, 50, 125, 193, 250, 337, 386, 625, 674, 965, 1250, 1685, 1930, 3370, 4825, 8425, 9650, 16850, 24125, 42125, 48250, 65041, 84250, 120625, 130082, 210625, 241250, 325205, 421250, 650410, 1626025, 3252050, 8130125, 16260250, 40650625, 81301250]

約数ペア:

[(1, 81301250), (2, 40650625), (5, 16260250), (10, 8130125), (25, 3252050), (50, 1626025), (125, 650410), (193, 421250), (250, 325205), (337, 241250), (386, 210625), (625, 130082), (674, 120625), (965, 84250), (1250, 65041), (1685, 48250), (1930, 42125), (3370, 24125), (4825, 16850), (8425, 9650)]