19350565

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{41}}^1\times {\mathrm{53}}^1\times {\mathrm{137}}^1$

素因数の和:249

約数の個数: 32

約数和(自身を含む): 26290656

約数和(自身を除く): 6940091

約数列:

[1, 5, 13, 41, 53, 65, 137, 205, 265, 533, 685, 689, 1781, 2173, 2665, 3445, 5617, 7261, 8905, 10865, 28085, 28249, 36305, 73021, 94393, 141245, 297701, 365105, 471965, 1488505, 3870113, 19350565]

約数ペア:

[(1, 19350565), (5, 3870113), (13, 1488505), (41, 471965), (53, 365105), (65, 297701), (137, 141245), (205, 94393), (265, 73021), (533, 36305), (685, 28249), (689, 28085), (1781, 10865), (2173, 8905), (2665, 7261), (3445, 5617)]