19916884

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{607}}^1\times {\mathrm{631}}^1$

素因数の和:1255

約数の個数: 24

約数和(自身を含む): 37657088

約数和(自身を除く): 17740204

約数列:

[1, 2, 4, 13, 26, 52, 607, 631, 1214, 1262, 2428, 2524, 7891, 8203, 15782, 16406, 31564, 32812, 383017, 766034, 1532068, 4979221, 9958442, 19916884]

約数ペア:

[(1, 19916884), (2, 9958442), (4, 4979221), (13, 1532068), (26, 766034), (52, 383017), (607, 32812), (631, 31564), (1214, 16406), (1262, 15782), (2428, 8203), (2524, 7891)]