213108255

素因数分解:

$3^2\times 5^1\times {\mathrm{257}}^1\times {\mathrm{18427}}^1$

素因数の和:18695

約数の個数: 24

約数和(自身を含む): 370845072

約数和(自身を除く): 157736817

約数列:

[1, 3, 5, 9, 15, 45, 257, 771, 1285, 2313, 3855, 11565, 18427, 55281, 92135, 165843, 276405, 829215, 4735739, 14207217, 23678695, 42621651, 71036085, 213108255]

約数ペア:

[(1, 213108255), (3, 71036085), (5, 42621651), (9, 23678695), (15, 14207217), (45, 4735739), (257, 829215), (771, 276405), (1285, 165843), (2313, 92135), (3855, 55281), (11565, 18427)]