20217675

素因数分解:

$3^1\times 5^2\times {\mathrm{17}}^1\times {\mathrm{101}}^1\times {\mathrm{157}}^1$

素因数の和:288

約数の個数: 48

約数和(自身を含む): 35970912

約数和(自身を除く): 15753237

約数列:

[1, 3, 5, 15, 17, 25, 51, 75, 85, 101, 157, 255, 303, 425, 471, 505, 785, 1275, 1515, 1717, 2355, 2525, 2669, 3925, 5151, 7575, 8007, 8585, 11775, 13345, 15857, 25755, 40035, 42925, 47571, 66725, 79285, 128775, 200175, 237855, 269569, 396425, 808707, 1189275, 1347845, 4043535, 6739225, 20217675]

約数ペア:

[(1, 20217675), (3, 6739225), (5, 4043535), (15, 1347845), (17, 1189275), (25, 808707), (51, 396425), (75, 269569), (85, 237855), (101, 200175), (157, 128775), (255, 79285), (303, 66725), (425, 47571), (471, 42925), (505, 40035), (785, 25755), (1275, 15857), (1515, 13345), (1717, 11775), (2355, 8585), (2525, 8007), (2669, 7575), (3925, 5151)]