21130270

素因数分解:

$2^1\times 5^1\times 7^2\times {\mathrm{29}}^1\times {\mathrm{1487}}^1$

素因数の和:1537

約数の個数: 48

約数和(自身を含む): 45800640

約数和(自身を除く): 24670370

約数列:

[1, 2, 5, 7, 10, 14, 29, 35, 49, 58, 70, 98, 145, 203, 245, 290, 406, 490, 1015, 1421, 1487, 2030, 2842, 2974, 7105, 7435, 10409, 14210, 14870, 20818, 43123, 52045, 72863, 86246, 104090, 145726, 215615, 301861, 364315, 431230, 603722, 728630, 1509305, 2113027, 3018610, 4226054, 10565135, 21130270]

約数ペア:

[(1, 21130270), (2, 10565135), (5, 4226054), (7, 3018610), (10, 2113027), (14, 1509305), (29, 728630), (35, 603722), (49, 431230), (58, 364315), (70, 301861), (98, 215615), (145, 145726), (203, 104090), (245, 86246), (290, 72863), (406, 52045), (490, 43123), (1015, 20818), (1421, 14870), (1487, 14210), (2030, 10409), (2842, 7435), (2974, 7105)]