81426640

素因数分解:

$2^4\times 5^1\times {\mathrm{37}}^1\times {\mathrm{27509}}^1$

素因数の和:27559

約数の個数: 40

約数和(自身を含む): 194440680

約数和(自身を除く): 113014040

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 37, 40, 74, 80, 148, 185, 296, 370, 592, 740, 1480, 2960, 27509, 55018, 110036, 137545, 220072, 275090, 440144, 550180, 1017833, 1100360, 2035666, 2200720, 4071332, 5089165, 8142664, 10178330, 16285328, 20356660, 40713320, 81426640]

約数ペア:

[(1, 81426640), (2, 40713320), (4, 20356660), (5, 16285328), (8, 10178330), (10, 8142664), (16, 5089165), (20, 4071332), (37, 2200720), (40, 2035666), (74, 1100360), (80, 1017833), (148, 550180), (185, 440144), (296, 275090), (370, 220072), (592, 137545), (740, 110036), (1480, 55018), (2960, 27509)]