20919120

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{101}}^1\times {\mathrm{863}}^1$

素因数の和:980

約数の個数: 80

約数和(自身を含む): 65567232

約数和(自身を除く): 44648112

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 40, 48, 60, 80, 101, 120, 202, 240, 303, 404, 505, 606, 808, 863, 1010, 1212, 1515, 1616, 1726, 2020, 2424, 2589, 3030, 3452, 4040, 4315, 4848, 5178, 6060, 6904, 8080, 8630, 10356, 12120, 12945, 13808, 17260, 20712, 24240, 25890, 34520, 41424, 51780, 69040, 87163, 103560, 174326, 207120, 261489, 348652, 435815, 522978, 697304, 871630, 1045956, 1307445, 1394608, 1743260, 2091912, 2614890, 3486520, 4183824, 5229780, 6973040, 10459560, 20919120]

約数ペア:

[(1, 20919120), (2, 10459560), (3, 6973040), (4, 5229780), (5, 4183824), (6, 3486520), (8, 2614890), (10, 2091912), (12, 1743260), (15, 1394608), (16, 1307445), (20, 1045956), (24, 871630), (30, 697304), (40, 522978), (48, 435815), (60, 348652), (80, 261489), (101, 207120), (120, 174326), (202, 103560), (240, 87163), (303, 69040), (404, 51780), (505, 41424), (606, 34520), (808, 25890), (863, 24240), (1010, 20712), (1212, 17260), (1515, 13808), (1616, 12945), (1726, 12120), (2020, 10356), (2424, 8630), (2589, 8080), (3030, 6904), (3452, 6060), (4040, 5178), (4315, 4848)]