28905175

素因数分解:

$5^2\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{151}}^1$

素因数の和:224

約数の個数: 48

約数和(自身を含む): 42219520

約数和(自身を除く): 13314345

約数列:

[1, 5, 13, 19, 25, 31, 65, 95, 151, 155, 247, 325, 403, 475, 589, 755, 775, 1235, 1963, 2015, 2869, 2945, 3775, 4681, 6175, 7657, 9815, 10075, 14345, 14725, 23405, 37297, 38285, 49075, 60853, 71725, 88939, 117025, 186485, 191425, 304265, 444695, 932425, 1156207, 1521325, 2223475, 5781035, 28905175]

約数ペア:

[(1, 28905175), (5, 5781035), (13, 2223475), (19, 1521325), (25, 1156207), (31, 932425), (65, 444695), (95, 304265), (151, 191425), (155, 186485), (247, 117025), (325, 88939), (403, 71725), (475, 60853), (589, 49075), (755, 38285), (775, 37297), (1235, 23405), (1963, 14725), (2015, 14345), (2869, 10075), (2945, 9815), (3775, 7657), (4681, 6175)]