28409810

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{19867}}^1$

素因数の和:19898

約数の個数: 32

約数和(自身を含む): 60080832

約数和(自身を除く): 31671022

約数列:

[1, 2, 5, 10, 11, 13, 22, 26, 55, 65, 110, 130, 143, 286, 715, 1430, 19867, 39734, 99335, 198670, 218537, 258271, 437074, 516542, 1092685, 1291355, 2185370, 2582710, 2840981, 5681962, 14204905, 28409810]

約数ペア:

[(1, 28409810), (2, 14204905), (5, 5681962), (10, 2840981), (11, 2582710), (13, 2185370), (22, 1291355), (26, 1092685), (55, 516542), (65, 437074), (110, 258271), (130, 218537), (143, 198670), (286, 99335), (715, 39734), (1430, 19867)]