20257575

素因数分解:

$3^1\times 5^2\times {\mathrm{13}}^1\times {\mathrm{79}}^1\times {\mathrm{263}}^1$

素因数の和:368

約数の個数: 48

約数和(自身を含む): 36664320

約数和(自身を除く): 16406745

約数列:

[1, 3, 5, 13, 15, 25, 39, 65, 75, 79, 195, 237, 263, 325, 395, 789, 975, 1027, 1185, 1315, 1975, 3081, 3419, 3945, 5135, 5925, 6575, 10257, 15405, 17095, 19725, 20777, 25675, 51285, 62331, 77025, 85475, 103885, 256425, 270101, 311655, 519425, 810303, 1350505, 1558275, 4051515, 6752525, 20257575]

約数ペア:

[(1, 20257575), (3, 6752525), (5, 4051515), (13, 1558275), (15, 1350505), (25, 810303), (39, 519425), (65, 311655), (75, 270101), (79, 256425), (195, 103885), (237, 85475), (263, 77025), (325, 62331), (395, 51285), (789, 25675), (975, 20777), (1027, 19725), (1185, 17095), (1315, 15405), (1975, 10257), (3081, 6575), (3419, 5925), (3945, 5135)]