15315020

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{139}}^1\times {\mathrm{787}}^1$

素因数の和:942

約数の個数: 48

約数和(自身を含む): 37067520

約数和(自身を除く): 21752500

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 139, 140, 278, 556, 695, 787, 973, 1390, 1574, 1946, 2780, 3148, 3892, 3935, 4865, 5509, 7870, 9730, 11018, 15740, 19460, 22036, 27545, 55090, 109393, 110180, 218786, 437572, 546965, 765751, 1093930, 1531502, 2187860, 3063004, 3828755, 7657510, 15315020]

約数ペア:

[(1, 15315020), (2, 7657510), (4, 3828755), (5, 3063004), (7, 2187860), (10, 1531502), (14, 1093930), (20, 765751), (28, 546965), (35, 437572), (70, 218786), (139, 110180), (140, 109393), (278, 55090), (556, 27545), (695, 22036), (787, 19460), (973, 15740), (1390, 11018), (1574, 9730), (1946, 7870), (2780, 5509), (3148, 4865), (3892, 3935)]