20401320

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{197}}^1\times {\mathrm{863}}^1$

素因数の和:1074

約数の個数: 64

約数和(自身を含む): 61585920

約数和(自身を除く): 41184600

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 30, 40, 60, 120, 197, 394, 591, 788, 863, 985, 1182, 1576, 1726, 1970, 2364, 2589, 2955, 3452, 3940, 4315, 4728, 5178, 5910, 6904, 7880, 8630, 10356, 11820, 12945, 17260, 20712, 23640, 25890, 34520, 51780, 103560, 170011, 340022, 510033, 680044, 850055, 1020066, 1360088, 1700110, 2040132, 2550165, 3400220, 4080264, 5100330, 6800440, 10200660, 20401320]

約数ペア:

[(1, 20401320), (2, 10200660), (3, 6800440), (4, 5100330), (5, 4080264), (6, 3400220), (8, 2550165), (10, 2040132), (12, 1700110), (15, 1360088), (20, 1020066), (24, 850055), (30, 680044), (40, 510033), (60, 340022), (120, 170011), (197, 103560), (394, 51780), (591, 34520), (788, 25890), (863, 23640), (985, 20712), (1182, 17260), (1576, 12945), (1726, 11820), (1970, 10356), (2364, 8630), (2589, 7880), (2955, 6904), (3452, 5910), (3940, 5178), (4315, 4728)]