20391560

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{3833}}^1$

素因数の和:3870

約数の個数: 64

約数和(自身を含む): 55209600

約数和(自身を除く): 34818040

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 19, 20, 28, 35, 38, 40, 56, 70, 76, 95, 133, 140, 152, 190, 266, 280, 380, 532, 665, 760, 1064, 1330, 2660, 3833, 5320, 7666, 15332, 19165, 26831, 30664, 38330, 53662, 72827, 76660, 107324, 134155, 145654, 153320, 214648, 268310, 291308, 364135, 509789, 536620, 582616, 728270, 1019578, 1073240, 1456540, 2039156, 2548945, 2913080, 4078312, 5097890, 10195780, 20391560]

約数ペア:

[(1, 20391560), (2, 10195780), (4, 5097890), (5, 4078312), (7, 2913080), (8, 2548945), (10, 2039156), (14, 1456540), (19, 1073240), (20, 1019578), (28, 728270), (35, 582616), (38, 536620), (40, 509789), (56, 364135), (70, 291308), (76, 268310), (95, 214648), (133, 153320), (140, 145654), (152, 134155), (190, 107324), (266, 76660), (280, 72827), (380, 53662), (532, 38330), (665, 30664), (760, 26831), (1064, 19165), (1330, 15332), (2660, 7666), (3833, 5320)]