155804540

素因数分解:

$2^2\times 5^1\times {\mathrm{401}}^1\times {\mathrm{19427}}^1$

素因数の和:19837

約数の個数: 24

約数和(自身を含む): 328022352

約数和(自身を除く): 172217812

約数列:

[1, 2, 4, 5, 10, 20, 401, 802, 1604, 2005, 4010, 8020, 19427, 38854, 77708, 97135, 194270, 388540, 7790227, 15580454, 31160908, 38951135, 77902270, 155804540]

約数ペア:

[(1, 155804540), (2, 77902270), (4, 38951135), (5, 31160908), (10, 15580454), (20, 7790227), (401, 388540), (802, 194270), (1604, 97135), (2005, 77708), (4010, 38854), (8020, 19427)]