21000700030

素因数分解:

$2^1\times 5^1\times {\mathrm{29}}^1\times {\mathrm{72416207}}^1$

素因数の和:72416243

約数の個数: 16

約数和(自身を含む): 39104752320

約数和(自身を除く): 18104052290

約数列:

[1, 2, 5, 10, 29, 58, 145, 290, 72416207, 144832414, 362081035, 724162070, 2100070003, 4200140006, 10500350015, 21000700030]

約数ペア:

[(1, 21000700030), (2, 10500350015), (5, 4200140006), (10, 2100070003), (29, 724162070), (58, 362081035), (145, 144832414), (290, 72416207)]