261520237

素因数分解:

${\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{61}}^1\times {\mathrm{73}}^1\times {\mathrm{281}}^1$

素因数の和:445

約数の個数: 32

約数和(自身を含む): 310515840

約数和(自身を除く): 48995603

約数列:

[1, 11, 19, 61, 73, 209, 281, 671, 803, 1159, 1387, 3091, 4453, 5339, 12749, 15257, 17141, 20513, 48983, 58729, 84607, 188551, 225643, 325679, 389747, 930677, 1251293, 3582469, 4287217, 13764223, 23774567, 261520237]

約数ペア:

[(1, 261520237), (11, 23774567), (19, 13764223), (61, 4287217), (73, 3582469), (209, 1251293), (281, 930677), (671, 389747), (803, 325679), (1159, 225643), (1387, 188551), (3091, 84607), (4453, 58729), (5339, 48983), (12749, 20513), (15257, 17141)]