21013420

素因数分解:

$2^2\times 5^1\times {\mathrm{127}}^1\times {\mathrm{8273}}^1$

素因数の和:8409

約数の個数: 24

約数和(自身を含む): 44481024

約数和(自身を除く): 23467604

約数列:

[1, 2, 4, 5, 10, 20, 127, 254, 508, 635, 1270, 2540, 8273, 16546, 33092, 41365, 82730, 165460, 1050671, 2101342, 4202684, 5253355, 10506710, 21013420]

約数ペア:

[(1, 21013420), (2, 10506710), (4, 5253355), (5, 4202684), (10, 2101342), (20, 1050671), (127, 165460), (254, 82730), (508, 41365), (635, 33092), (1270, 16546), (2540, 8273)]