20907120

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{6701}}^1$

素因数の和:6730

約数の個数: 80

約数和(自身を含む): 69808032

約数和(自身を除く): 48900912

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 13, 15, 16, 20, 24, 26, 30, 39, 40, 48, 52, 60, 65, 78, 80, 104, 120, 130, 156, 195, 208, 240, 260, 312, 390, 520, 624, 780, 1040, 1560, 3120, 6701, 13402, 20103, 26804, 33505, 40206, 53608, 67010, 80412, 87113, 100515, 107216, 134020, 160824, 174226, 201030, 261339, 268040, 321648, 348452, 402060, 435565, 522678, 536080, 696904, 804120, 871130, 1045356, 1306695, 1393808, 1608240, 1742260, 2090712, 2613390, 3484520, 4181424, 5226780, 6969040, 10453560, 20907120]

約数ペア:

[(1, 20907120), (2, 10453560), (3, 6969040), (4, 5226780), (5, 4181424), (6, 3484520), (8, 2613390), (10, 2090712), (12, 1742260), (13, 1608240), (15, 1393808), (16, 1306695), (20, 1045356), (24, 871130), (26, 804120), (30, 696904), (39, 536080), (40, 522678), (48, 435565), (52, 402060), (60, 348452), (65, 321648), (78, 268040), (80, 261339), (104, 201030), (120, 174226), (130, 160824), (156, 134020), (195, 107216), (208, 100515), (240, 87113), (260, 80412), (312, 67010), (390, 53608), (520, 40206), (624, 33505), (780, 26804), (1040, 20103), (1560, 13402), (3120, 6701)]