19054256

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{101}}^1\times {\mathrm{907}}^1$

素因数の和:1029

約数の個数: 40

約数和(自身を含む): 40195344

約数和(自身を除く): 21141088

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 101, 104, 202, 208, 404, 808, 907, 1313, 1616, 1814, 2626, 3628, 5252, 7256, 10504, 11791, 14512, 21008, 23582, 47164, 91607, 94328, 183214, 188656, 366428, 732856, 1190891, 1465712, 2381782, 4763564, 9527128, 19054256]

約数ペア:

[(1, 19054256), (2, 9527128), (4, 4763564), (8, 2381782), (13, 1465712), (16, 1190891), (26, 732856), (52, 366428), (101, 188656), (104, 183214), (202, 94328), (208, 91607), (404, 47164), (808, 23582), (907, 21008), (1313, 14512), (1616, 11791), (1814, 10504), (2626, 7256), (3628, 5252)]