15991325

素因数分解:

$5^2\times 7^1\times {\mathrm{23}}^1\times {\mathrm{29}}^1\times {\mathrm{137}}^1$

素因数の和:206

約数の個数: 48

約数和(自身を含む): 24641280

約数和(自身を除く): 8649955

約数列:

[1, 5, 7, 23, 25, 29, 35, 115, 137, 145, 161, 175, 203, 575, 667, 685, 725, 805, 959, 1015, 3151, 3335, 3425, 3973, 4025, 4669, 4795, 5075, 15755, 16675, 19865, 22057, 23345, 23975, 27811, 78775, 91379, 99325, 110285, 116725, 139055, 456895, 551425, 639653, 695275, 2284475, 3198265, 15991325]

約数ペア:

[(1, 15991325), (5, 3198265), (7, 2284475), (23, 695275), (25, 639653), (29, 551425), (35, 456895), (115, 139055), (137, 116725), (145, 110285), (161, 99325), (175, 91379), (203, 78775), (575, 27811), (667, 23975), (685, 23345), (725, 22057), (805, 19865), (959, 16675), (1015, 15755), (3151, 5075), (3335, 4795), (3425, 4669), (3973, 4025)]