21066440

素因数分解:

$2^3\times 5^1\times {\mathrm{19}}^1\times {\mathrm{53}}^1\times {\mathrm{523}}^1$

素因数の和:606

約数の個数: 64

約数和(自身を含む): 50932800

約数和(自身を除く): 29866360

約数列:

[1, 2, 4, 5, 8, 10, 19, 20, 38, 40, 53, 76, 95, 106, 152, 190, 212, 265, 380, 424, 523, 530, 760, 1007, 1046, 1060, 2014, 2092, 2120, 2615, 4028, 4184, 5035, 5230, 8056, 9937, 10070, 10460, 19874, 20140, 20920, 27719, 39748, 40280, 49685, 55438, 79496, 99370, 110876, 138595, 198740, 221752, 277190, 397480, 526661, 554380, 1053322, 1108760, 2106644, 2633305, 4213288, 5266610, 10533220, 21066440]

約数ペア:

[(1, 21066440), (2, 10533220), (4, 5266610), (5, 4213288), (8, 2633305), (10, 2106644), (19, 1108760), (20, 1053322), (38, 554380), (40, 526661), (53, 397480), (76, 277190), (95, 221752), (106, 198740), (152, 138595), (190, 110876), (212, 99370), (265, 79496), (380, 55438), (424, 49685), (523, 40280), (530, 39748), (760, 27719), (1007, 20920), (1046, 20140), (1060, 19874), (2014, 10460), (2092, 10070), (2120, 9937), (2615, 8056), (4028, 5230), (4184, 5035)]