18389072

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{211}}^1\times {\mathrm{419}}^1$

素因数の和:651

約数の個数: 40

約数和(自身を含む): 38643360

約数和(自身を除く): 20254288

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 104, 208, 211, 419, 422, 838, 844, 1676, 1688, 2743, 3352, 3376, 5447, 5486, 6704, 10894, 10972, 21788, 21944, 43576, 43888, 87152, 88409, 176818, 353636, 707272, 1149317, 1414544, 2298634, 4597268, 9194536, 18389072]

約数ペア:

[(1, 18389072), (2, 9194536), (4, 4597268), (8, 2298634), (13, 1414544), (16, 1149317), (26, 707272), (52, 353636), (104, 176818), (208, 88409), (211, 87152), (419, 43888), (422, 43576), (838, 21944), (844, 21788), (1676, 10972), (1688, 10894), (2743, 6704), (3352, 5486), (3376, 5447)]