21365680

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{38153}}^1$

素因数の和:38173

約数の個数: 40

約数和(自身を含む): 56773152

約数和(自身を除く): 35407472

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 56, 70, 80, 112, 140, 280, 560, 38153, 76306, 152612, 190765, 267071, 305224, 381530, 534142, 610448, 763060, 1068284, 1335355, 1526120, 2136568, 2670710, 3052240, 4273136, 5341420, 10682840, 21365680]

約数ペア:

[(1, 21365680), (2, 10682840), (4, 5341420), (5, 4273136), (7, 3052240), (8, 2670710), (10, 2136568), (14, 1526120), (16, 1335355), (20, 1068284), (28, 763060), (35, 610448), (40, 534142), (56, 381530), (70, 305224), (80, 267071), (112, 190765), (140, 152612), (280, 76306), (560, 38153)]