405920

素因数分解:

$2^5\times 5^1\times {\mathrm{43}}^1\times {\mathrm{59}}^1$

素因数の和:117

約数の個数: 48

約数和(自身を含む): 997920

約数和(自身を除く): 592000

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 43, 59, 80, 86, 118, 160, 172, 215, 236, 295, 344, 430, 472, 590, 688, 860, 944, 1180, 1376, 1720, 1888, 2360, 2537, 3440, 4720, 5074, 6880, 9440, 10148, 12685, 20296, 25370, 40592, 50740, 81184, 101480, 202960, 405920]

約数ペア:

[(1, 405920), (2, 202960), (4, 101480), (5, 81184), (8, 50740), (10, 40592), (16, 25370), (20, 20296), (32, 12685), (40, 10148), (43, 9440), (59, 6880), (80, 5074), (86, 4720), (118, 3440), (160, 2537), (172, 2360), (215, 1888), (236, 1720), (295, 1376), (344, 1180), (430, 944), (472, 860), (590, 688)]