18974696

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{4243}}^1$

素因数の和:4305

約数の個数: 32

約数和(自身を含む): 39214560

約数和(自身を除く): 20239864

約数列:

[1, 2, 4, 8, 13, 26, 43, 52, 86, 104, 172, 344, 559, 1118, 2236, 4243, 4472, 8486, 16972, 33944, 55159, 110318, 182449, 220636, 364898, 441272, 729796, 1459592, 2371837, 4743674, 9487348, 18974696]

約数ペア:

[(1, 18974696), (2, 9487348), (4, 4743674), (8, 2371837), (13, 1459592), (26, 729796), (43, 441272), (52, 364898), (86, 220636), (104, 182449), (172, 110318), (344, 55159), (559, 33944), (1118, 16972), (2236, 8486), (4243, 4472)]