208983405

素因数分解:

$3^1\times 5^1\times {\mathrm{23}}^1\times {\mathrm{257}}^1\times {\mathrm{2357}}^1$

素因数の和:2645

約数の個数: 32

約数和(自身を含む): 350417664

約数和(自身を除く): 141434259

約数列:

[1, 3, 5, 15, 23, 69, 115, 257, 345, 771, 1285, 2357, 3855, 5911, 7071, 11785, 17733, 29555, 35355, 54211, 88665, 162633, 271055, 605749, 813165, 1817247, 3028745, 9086235, 13932227, 41796681, 69661135, 208983405]

約数ペア:

[(1, 208983405), (3, 69661135), (5, 41796681), (15, 13932227), (23, 9086235), (69, 3028745), (115, 1817247), (257, 813165), (345, 605749), (771, 271055), (1285, 162633), (2357, 88665), (3855, 54211), (5911, 35355), (7071, 29555), (11785, 17733)]