20528040

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{13159}}^1$

素因数の和:13186

約数の個数: 64

約数和(自身を含む): 66326400

約数和(自身を除く): 45798360

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 13, 15, 20, 24, 26, 30, 39, 40, 52, 60, 65, 78, 104, 120, 130, 156, 195, 260, 312, 390, 520, 780, 1560, 13159, 26318, 39477, 52636, 65795, 78954, 105272, 131590, 157908, 171067, 197385, 263180, 315816, 342134, 394770, 513201, 526360, 684268, 789540, 855335, 1026402, 1368536, 1579080, 1710670, 2052804, 2566005, 3421340, 4105608, 5132010, 6842680, 10264020, 20528040]

約数ペア:

[(1, 20528040), (2, 10264020), (3, 6842680), (4, 5132010), (5, 4105608), (6, 3421340), (8, 2566005), (10, 2052804), (12, 1710670), (13, 1579080), (15, 1368536), (20, 1026402), (24, 855335), (26, 789540), (30, 684268), (39, 526360), (40, 513201), (52, 394770), (60, 342134), (65, 315816), (78, 263180), (104, 197385), (120, 171067), (130, 157908), (156, 131590), (195, 105272), (260, 78954), (312, 65795), (390, 52636), (520, 39477), (780, 26318), (1560, 13159)]