28400500

素因数分解:

$2^2\times 5^3\times {\mathrm{79}}^1\times {\mathrm{719}}^1$

素因数の和:817

約数の個数: 48

約数和(自身を含む): 62899200

約数和(自身を除く): 34498700

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 79, 100, 125, 158, 250, 316, 395, 500, 719, 790, 1438, 1580, 1975, 2876, 3595, 3950, 7190, 7900, 9875, 14380, 17975, 19750, 35950, 39500, 56801, 71900, 89875, 113602, 179750, 227204, 284005, 359500, 568010, 1136020, 1420025, 2840050, 5680100, 7100125, 14200250, 28400500]

約数ペア:

[(1, 28400500), (2, 14200250), (4, 7100125), (5, 5680100), (10, 2840050), (20, 1420025), (25, 1136020), (50, 568010), (79, 359500), (100, 284005), (125, 227204), (158, 179750), (250, 113602), (316, 89875), (395, 71900), (500, 56801), (719, 39500), (790, 35950), (1438, 19750), (1580, 17975), (1975, 14380), (2876, 9875), (3595, 7900), (3950, 7190)]