261125488

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{53}}^1\times {\mathrm{23687}}^1$

素因数の和:23761

約数の個数: 40

約数和(自身を含む): 555151968

約数和(自身を除く): 294026480

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 53, 104, 106, 208, 212, 424, 689, 848, 1378, 2756, 5512, 11024, 23687, 47374, 94748, 189496, 307931, 378992, 615862, 1231724, 1255411, 2463448, 2510822, 4926896, 5021644, 10043288, 16320343, 20086576, 32640686, 65281372, 130562744, 261125488]

約数ペア:

[(1, 261125488), (2, 130562744), (4, 65281372), (8, 32640686), (13, 20086576), (16, 16320343), (26, 10043288), (52, 5021644), (53, 4926896), (104, 2510822), (106, 2463448), (208, 1255411), (212, 1231724), (424, 615862), (689, 378992), (848, 307931), (1378, 189496), (2756, 94748), (5512, 47374), (11024, 23687)]