80725775

素因数分解:

$5^2\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{769}}^1$

素因数の和:828

約数の個数: 48

約数和(自身を含む): 120304800

約数和(自身を除く): 39579025

約数列:

[1, 5, 13, 17, 19, 25, 65, 85, 95, 221, 247, 323, 325, 425, 475, 769, 1105, 1235, 1615, 3845, 4199, 5525, 6175, 8075, 9997, 13073, 14611, 19225, 20995, 49985, 65365, 73055, 104975, 169949, 189943, 248387, 249925, 326825, 365275, 849745, 949715, 1241935, 3229031, 4248725, 4748575, 6209675, 16145155, 80725775]

約数ペア:

[(1, 80725775), (5, 16145155), (13, 6209675), (17, 4748575), (19, 4248725), (25, 3229031), (65, 1241935), (85, 949715), (95, 849745), (221, 365275), (247, 326825), (323, 249925), (325, 248387), (425, 189943), (475, 169949), (769, 104975), (1105, 73055), (1235, 65365), (1615, 49985), (3845, 20995), (4199, 19225), (5525, 14611), (6175, 13073), (8075, 9997)]