19488920

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{44293}}^1$

素因数の和:44315

約数の個数: 32

約数和(自身を含む): 47837520

約数和(自身を除く): 28348600

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 88, 110, 220, 440, 44293, 88586, 177172, 221465, 354344, 442930, 487223, 885860, 974446, 1771720, 1948892, 2436115, 3897784, 4872230, 9744460, 19488920]

約数ペア:

[(1, 19488920), (2, 9744460), (4, 4872230), (5, 3897784), (8, 2436115), (10, 1948892), (11, 1771720), (20, 974446), (22, 885860), (40, 487223), (44, 442930), (55, 354344), (88, 221465), (110, 177172), (220, 88586), (440, 44293)]