219509125

素因数分解:

$5^3\times {\mathrm{11}}^2\times {\mathrm{23}}^1\times {\mathrm{631}}^1$

素因数の和:691

約数の個数: 48

約数和(自身を含む): 314705664

約数和(自身を除く): 95196539

約数列:

[1, 5, 11, 23, 25, 55, 115, 121, 125, 253, 275, 575, 605, 631, 1265, 1375, 2783, 2875, 3025, 3155, 6325, 6941, 13915, 14513, 15125, 15775, 31625, 34705, 69575, 72565, 76351, 78875, 159643, 173525, 347875, 362825, 381755, 798215, 867625, 1756073, 1814125, 1908775, 3991075, 8780365, 9543875, 19955375, 43901825, 219509125]

約数ペア:

[(1, 219509125), (5, 43901825), (11, 19955375), (23, 9543875), (25, 8780365), (55, 3991075), (115, 1908775), (121, 1814125), (125, 1756073), (253, 867625), (275, 798215), (575, 381755), (605, 362825), (631, 347875), (1265, 173525), (1375, 159643), (2783, 78875), (2875, 76351), (3025, 72565), (3155, 69575), (6325, 34705), (6941, 31625), (13915, 15775), (14513, 15125)]