400112780

素因数分解:

$2^2\times 5^1\times {\mathrm{541}}^1\times {\mathrm{36979}}^1$

素因数の和:37529

約数の個数: 24

約数和(自身を含む): 841812720

約数和(自身を除く): 441699940

約数列:

[1, 2, 4, 5, 10, 20, 541, 1082, 2164, 2705, 5410, 10820, 36979, 73958, 147916, 184895, 369790, 739580, 20005639, 40011278, 80022556, 100028195, 200056390, 400112780]

約数ペア:

[(1, 400112780), (2, 200056390), (4, 100028195), (5, 80022556), (10, 40011278), (20, 20005639), (541, 739580), (1082, 369790), (2164, 184895), (2705, 147916), (5410, 73958), (10820, 36979)]