19984900

素因数分解:

$2^2\times 5^2\times {\mathrm{13}}^1\times {\mathrm{15373}}^1$

素因数の和:15400

約数の個数: 36

約数和(自身を含む): 46706212

約数和(自身を除く): 26721312

約数列:

[1, 2, 4, 5, 10, 13, 20, 25, 26, 50, 52, 65, 100, 130, 260, 325, 650, 1300, 15373, 30746, 61492, 76865, 153730, 199849, 307460, 384325, 399698, 768650, 799396, 999245, 1537300, 1998490, 3996980, 4996225, 9992450, 19984900]

約数ペア:

[(1, 19984900), (2, 9992450), (4, 4996225), (5, 3996980), (10, 1998490), (13, 1537300), (20, 999245), (25, 799396), (26, 768650), (50, 399698), (52, 384325), (65, 307460), (100, 199849), (130, 153730), (260, 76865), (325, 61492), (650, 30746), (1300, 15373)]