28804880

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{27697}}^1$

素因数の和:27723

約数の個数: 40

約数和(自身を含む): 72125592

約数和(自身を除く): 43320712

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 40, 52, 65, 80, 104, 130, 208, 260, 520, 1040, 27697, 55394, 110788, 138485, 221576, 276970, 360061, 443152, 553940, 720122, 1107880, 1440244, 1800305, 2215760, 2880488, 3600610, 5760976, 7201220, 14402440, 28804880]

約数ペア:

[(1, 28804880), (2, 14402440), (4, 7201220), (5, 5760976), (8, 3600610), (10, 2880488), (13, 2215760), (16, 1800305), (20, 1440244), (26, 1107880), (40, 720122), (52, 553940), (65, 443152), (80, 360061), (104, 276970), (130, 221576), (208, 138485), (260, 110788), (520, 55394), (1040, 27697)]