18930470

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{223}}^1\times {\mathrm{653}}^1$

素因数の和:896

約数の個数: 32

約数和(自身を含む): 36916992

約数和(自身を除く): 17986522

約数列:

[1, 2, 5, 10, 13, 26, 65, 130, 223, 446, 653, 1115, 1306, 2230, 2899, 3265, 5798, 6530, 8489, 14495, 16978, 28990, 42445, 84890, 145619, 291238, 728095, 1456190, 1893047, 3786094, 9465235, 18930470]

約数ペア:

[(1, 18930470), (2, 9465235), (5, 3786094), (10, 1893047), (13, 1456190), (26, 728095), (65, 291238), (130, 145619), (223, 84890), (446, 42445), (653, 28990), (1115, 16978), (1306, 14495), (2230, 8489), (2899, 6530), (3265, 5798)]