398451920

素因数分解:

$2^4\times 5^1\times {\mathrm{443}}^1\times {\mathrm{11243}}^1$

素因数の和:11699

約数の個数: 40

約数和(自身を含む): 928574496

約数和(自身を除く): 530122576

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 443, 886, 1772, 2215, 3544, 4430, 7088, 8860, 11243, 17720, 22486, 35440, 44972, 56215, 89944, 112430, 179888, 224860, 449720, 899440, 4980649, 9961298, 19922596, 24903245, 39845192, 49806490, 79690384, 99612980, 199225960, 398451920]

約数ペア:

[(1, 398451920), (2, 199225960), (4, 99612980), (5, 79690384), (8, 49806490), (10, 39845192), (16, 24903245), (20, 19922596), (40, 9961298), (80, 4980649), (443, 899440), (886, 449720), (1772, 224860), (2215, 179888), (3544, 112430), (4430, 89944), (7088, 56215), (8860, 44972), (11243, 35440), (17720, 22486)]