20131920

素因数分解:

$2^4\times 3^2\times 5^1\times {\mathrm{27961}}^1$

素因数の和:27980

約数の個数: 60

約数和(自身を含む): 67612116

約数和(自身を除く): 47480196

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 30, 36, 40, 45, 48, 60, 72, 80, 90, 120, 144, 180, 240, 360, 720, 27961, 55922, 83883, 111844, 139805, 167766, 223688, 251649, 279610, 335532, 419415, 447376, 503298, 559220, 671064, 838830, 1006596, 1118440, 1258245, 1342128, 1677660, 2013192, 2236880, 2516490, 3355320, 4026384, 5032980, 6710640, 10065960, 20131920]

約数ペア:

[(1, 20131920), (2, 10065960), (3, 6710640), (4, 5032980), (5, 4026384), (6, 3355320), (8, 2516490), (9, 2236880), (10, 2013192), (12, 1677660), (15, 1342128), (16, 1258245), (18, 1118440), (20, 1006596), (24, 838830), (30, 671064), (36, 559220), (40, 503298), (45, 447376), (48, 419415), (60, 335532), (72, 279610), (80, 251649), (90, 223688), (120, 167766), (144, 139805), (180, 111844), (240, 83883), (360, 55922), (720, 27961)]