20897240

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{5741}}^1$

素因数の和:5772

約数の個数: 64

約数和(自身を含む): 57879360

約数和(自身を除く): 36982120

約数列:

[1, 2, 4, 5, 7, 8, 10, 13, 14, 20, 26, 28, 35, 40, 52, 56, 65, 70, 91, 104, 130, 140, 182, 260, 280, 364, 455, 520, 728, 910, 1820, 3640, 5741, 11482, 22964, 28705, 40187, 45928, 57410, 74633, 80374, 114820, 149266, 160748, 200935, 229640, 298532, 321496, 373165, 401870, 522431, 597064, 746330, 803740, 1044862, 1492660, 1607480, 2089724, 2612155, 2985320, 4179448, 5224310, 10448620, 20897240]

約数ペア:

[(1, 20897240), (2, 10448620), (4, 5224310), (5, 4179448), (7, 2985320), (8, 2612155), (10, 2089724), (13, 1607480), (14, 1492660), (20, 1044862), (26, 803740), (28, 746330), (35, 597064), (40, 522431), (52, 401870), (56, 373165), (65, 321496), (70, 298532), (91, 229640), (104, 200935), (130, 160748), (140, 149266), (182, 114820), (260, 80374), (280, 74633), (364, 57410), (455, 45928), (520, 40187), (728, 28705), (910, 22964), (1820, 11482), (3640, 5741)]