19959225

素因数分解:

$3^1\times 5^2\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{1861}}^1$

素因数の和:1898

約数の個数: 48

約数和(自身を含む): 38789184

約数和(自身を除く): 18829959

約数列:

[1, 3, 5, 11, 13, 15, 25, 33, 39, 55, 65, 75, 143, 165, 195, 275, 325, 429, 715, 825, 975, 1861, 2145, 3575, 5583, 9305, 10725, 20471, 24193, 27915, 46525, 61413, 72579, 102355, 120965, 139575, 266123, 307065, 362895, 511775, 604825, 798369, 1330615, 1535325, 1814475, 3991845, 6653075, 19959225]

約数ペア:

[(1, 19959225), (3, 6653075), (5, 3991845), (11, 1814475), (13, 1535325), (15, 1330615), (25, 798369), (33, 604825), (39, 511775), (55, 362895), (65, 307065), (75, 266123), (143, 139575), (165, 120965), (195, 102355), (275, 72579), (325, 61413), (429, 46525), (715, 27915), (825, 24193), (975, 20471), (1861, 10725), (2145, 9305), (3575, 5583)]