19618352

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{257}}^1\times {\mathrm{367}}^1$

素因数の和:645

約数の個数: 40

約数和(自身を含む): 41205696

約数和(自身を除く): 21587344

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 104, 208, 257, 367, 514, 734, 1028, 1468, 2056, 2936, 3341, 4112, 4771, 5872, 6682, 9542, 13364, 19084, 26728, 38168, 53456, 76336, 94319, 188638, 377276, 754552, 1226147, 1509104, 2452294, 4904588, 9809176, 19618352]

約数ペア:

[(1, 19618352), (2, 9809176), (4, 4904588), (8, 2452294), (13, 1509104), (16, 1226147), (26, 754552), (52, 377276), (104, 188638), (208, 94319), (257, 76336), (367, 53456), (514, 38168), (734, 26728), (1028, 19084), (1468, 13364), (2056, 9542), (2936, 6682), (3341, 5872), (4112, 4771)]