16439900

素因数分解:

$2^2\times 5^2\times {\mathrm{79}}^1\times {\mathrm{2081}}^1$

素因数の和:2174

約数の個数: 36

約数和(自身を含む): 36143520

約数和(自身を除く): 19703620

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 79, 100, 158, 316, 395, 790, 1580, 1975, 2081, 3950, 4162, 7900, 8324, 10405, 20810, 41620, 52025, 104050, 164399, 208100, 328798, 657596, 821995, 1643990, 3287980, 4109975, 8219950, 16439900]

約数ペア:

[(1, 16439900), (2, 8219950), (4, 4109975), (5, 3287980), (10, 1643990), (20, 821995), (25, 657596), (50, 328798), (79, 208100), (100, 164399), (158, 104050), (316, 52025), (395, 41620), (790, 20810), (1580, 10405), (1975, 8324), (2081, 7900), (3950, 4162)]