21087531364

素因数分解:

$2^2\times {\mathrm{71}}^2\times {\mathrm{1045801}}^1$

素因数の和:1045947

約数の個数: 18

約数和(自身を含む): 37430299382

約数和(自身を除く): 16342768018

約数列:

[1, 2, 4, 71, 142, 284, 5041, 10082, 20164, 1045801, 2091602, 4183204, 74251871, 148503742, 297007484, 5271882841, 10543765682, 21087531364]

約数ペア:

[(1, 21087531364), (2, 10543765682), (4, 5271882841), (71, 297007484), (142, 148503742), (284, 74251871), (5041, 4183204), (10082, 2091602), (20164, 1045801)]