201988507

素因数分解:

$7^1\times {\mathrm{23}}^1\times {\mathrm{61}}^1\times {\mathrm{131}}^1\times {\mathrm{157}}^1$

素因数の和:379

約数の個数: 32

約数和(自身を含む): 248269824

約数和(自身を除く): 46281317

約数列:

[1, 7, 23, 61, 131, 157, 161, 427, 917, 1099, 1403, 3013, 3611, 7991, 9577, 9821, 20567, 21091, 25277, 55937, 67039, 143969, 183793, 220271, 473041, 1254587, 1286551, 1541897, 3311287, 8782109, 28855501, 201988507]

約数ペア:

[(1, 201988507), (7, 28855501), (23, 8782109), (61, 3311287), (131, 1541897), (157, 1286551), (161, 1254587), (427, 473041), (917, 220271), (1099, 183793), (1403, 143969), (3013, 67039), (3611, 55937), (7991, 25277), (9577, 21091), (9821, 20567)]