291260840

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{560117}}^1$

素因数の和:560141

約数の個数: 32

約数和(自身を含む): 705748680

約数和(自身を除く): 414487840

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 260, 520, 560117, 1120234, 2240468, 2800585, 4480936, 5601170, 7281521, 11202340, 14563042, 22404680, 29126084, 36407605, 58252168, 72815210, 145630420, 291260840]

約数ペア:

[(1, 291260840), (2, 145630420), (4, 72815210), (5, 58252168), (8, 36407605), (10, 29126084), (13, 22404680), (20, 14563042), (26, 11202340), (40, 7281521), (52, 5601170), (65, 4480936), (104, 2800585), (130, 2240468), (260, 1120234), (520, 560117)]