261125816

素因数分解:

$2^3\times 7^1\times {\mathrm{19}}^1\times {\mathrm{245419}}^1$

素因数の和:245451

約数の個数: 32

約数和(自身を含む): 589008000

約数和(自身を除く): 327882184

約数列:

[1, 2, 4, 7, 8, 14, 19, 28, 38, 56, 76, 133, 152, 266, 532, 1064, 245419, 490838, 981676, 1717933, 1963352, 3435866, 4662961, 6871732, 9325922, 13743464, 18651844, 32640727, 37303688, 65281454, 130562908, 261125816]

約数ペア:

[(1, 261125816), (2, 130562908), (4, 65281454), (7, 37303688), (8, 32640727), (14, 18651844), (19, 13743464), (28, 9325922), (38, 6871732), (56, 4662961), (76, 3435866), (133, 1963352), (152, 1717933), (266, 981676), (532, 490838), (1064, 245419)]