261828420

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{623401}}^1$

素因数の和:623420

約数の個数: 48

約数和(自身を含む): 837852288

約数和(自身を除く): 576023868

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 60, 70, 84, 105, 140, 210, 420, 623401, 1246802, 1870203, 2493604, 3117005, 3740406, 4363807, 6234010, 7480812, 8727614, 9351015, 12468020, 13091421, 17455228, 18702030, 21819035, 26182842, 37404060, 43638070, 52365684, 65457105, 87276140, 130914210, 261828420]

約数ペア:

[(1, 261828420), (2, 130914210), (3, 87276140), (4, 65457105), (5, 52365684), (6, 43638070), (7, 37404060), (10, 26182842), (12, 21819035), (14, 18702030), (15, 17455228), (20, 13091421), (21, 12468020), (28, 9351015), (30, 8727614), (35, 7480812), (42, 6234010), (60, 4363807), (70, 3740406), (84, 3117005), (105, 2493604), (140, 1870203), (210, 1246802), (420, 623401)]