20658945

素因数分解:

$3^1\times 5^1\times {\mathrm{23}}^1\times {\mathrm{233}}^1\times {\mathrm{257}}^1$

素因数の和:521

約数の個数: 32

約数和(自身を含む): 34774272

約数和(自身を除く): 14115327

約数列:

[1, 3, 5, 15, 23, 69, 115, 233, 257, 345, 699, 771, 1165, 1285, 3495, 3855, 5359, 5911, 16077, 17733, 26795, 29555, 59881, 80385, 88665, 179643, 299405, 898215, 1377263, 4131789, 6886315, 20658945]

約数ペア:

[(1, 20658945), (3, 6886315), (5, 4131789), (15, 1377263), (23, 898215), (69, 299405), (115, 179643), (233, 88665), (257, 80385), (345, 59881), (699, 29555), (771, 26795), (1165, 17733), (1285, 16077), (3495, 5911), (3855, 5359)]