261078140

素因数分解:

$2^2\times 5^1\times {\mathrm{139}}^1\times {\mathrm{93913}}^1$

素因数の和:94061

約数の個数: 24

約数和(自身を含む): 552214320

約数和(自身を除く): 291136180

約数列:

[1, 2, 4, 5, 10, 20, 139, 278, 556, 695, 1390, 2780, 93913, 187826, 375652, 469565, 939130, 1878260, 13053907, 26107814, 52215628, 65269535, 130539070, 261078140]

約数ペア:

[(1, 261078140), (2, 130539070), (4, 65269535), (5, 52215628), (10, 26107814), (20, 13053907), (139, 1878260), (278, 939130), (556, 469565), (695, 375652), (1390, 187826), (2780, 93913)]