20798570

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{139}}^1\times {\mathrm{1151}}^1$

素因数の和:1310

約数の個数: 32

約数和(自身を含む): 40642560

約数和(自身を除く): 19843990

約数列:

[1, 2, 5, 10, 13, 26, 65, 130, 139, 278, 695, 1151, 1390, 1807, 2302, 3614, 5755, 9035, 11510, 14963, 18070, 29926, 74815, 149630, 159989, 319978, 799945, 1599890, 2079857, 4159714, 10399285, 20798570]

約数ペア:

[(1, 20798570), (2, 10399285), (5, 4159714), (10, 2079857), (13, 1599890), (26, 799945), (65, 319978), (130, 159989), (139, 149630), (278, 74815), (695, 29926), (1151, 18070), (1390, 14963), (1807, 11510), (2302, 9035), (3614, 5755)]