21217030

素因数分解:

$2^1\times 5^1\times {\mathrm{79}}^1\times {\mathrm{107}}^1\times {\mathrm{251}}^1$

素因数の和:444

約数の個数: 32

約数和(自身を含む): 39191040

約数和(自身を除く): 17974010

約数列:

[1, 2, 5, 10, 79, 107, 158, 214, 251, 395, 502, 535, 790, 1070, 1255, 2510, 8453, 16906, 19829, 26857, 39658, 42265, 53714, 84530, 99145, 134285, 198290, 268570, 2121703, 4243406, 10608515, 21217030]

約数ペア:

[(1, 21217030), (2, 10608515), (5, 4243406), (10, 2121703), (79, 268570), (107, 198290), (158, 134285), (214, 99145), (251, 84530), (395, 53714), (502, 42265), (535, 39658), (790, 26857), (1070, 19829), (1255, 16906), (2510, 8453)]