131024680

素因数分解:

$2^3\times 5^1\times {\mathrm{281}}^1\times {\mathrm{11657}}^1$

素因数の和:11949

約数の個数: 32

約数和(自身を含む): 295880040

約数和(自身を除く): 164855360

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 281, 562, 1124, 1405, 2248, 2810, 5620, 11240, 11657, 23314, 46628, 58285, 93256, 116570, 233140, 466280, 3275617, 6551234, 13102468, 16378085, 26204936, 32756170, 65512340, 131024680]

約数ペア:

[(1, 131024680), (2, 65512340), (4, 32756170), (5, 26204936), (8, 16378085), (10, 13102468), (20, 6551234), (40, 3275617), (281, 466280), (562, 233140), (1124, 116570), (1405, 93256), (2248, 58285), (2810, 46628), (5620, 23314), (11240, 11657)]