7725620

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{139}}^1\times {\mathrm{397}}^1$

素因数の和:552

約数の個数: 48

約数和(自身を含む): 18721920

約数和(自身を除く): 10996300

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 139, 140, 278, 397, 556, 695, 794, 973, 1390, 1588, 1946, 1985, 2779, 2780, 3892, 3970, 4865, 5558, 7940, 9730, 11116, 13895, 19460, 27790, 55183, 55580, 110366, 220732, 275915, 386281, 551830, 772562, 1103660, 1545124, 1931405, 3862810, 7725620]

約数ペア:

[(1, 7725620), (2, 3862810), (4, 1931405), (5, 1545124), (7, 1103660), (10, 772562), (14, 551830), (20, 386281), (28, 275915), (35, 220732), (70, 110366), (139, 55580), (140, 55183), (278, 27790), (397, 19460), (556, 13895), (695, 11116), (794, 9730), (973, 7940), (1390, 5558), (1588, 4865), (1946, 3970), (1985, 3892), (2779, 2780)]