78968680

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{139}}^1\times {\mathrm{2029}}^1$

素因数の和:2186

約数の個数: 64

約数和(自身を含む): 204624000

約数和(自身を除く): 125655320

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 139, 140, 278, 280, 556, 695, 973, 1112, 1390, 1946, 2029, 2780, 3892, 4058, 4865, 5560, 7784, 8116, 9730, 10145, 14203, 16232, 19460, 20290, 28406, 38920, 40580, 56812, 71015, 81160, 113624, 142030, 282031, 284060, 564062, 568120, 1128124, 1410155, 1974217, 2256248, 2820310, 3948434, 5640620, 7896868, 9871085, 11281240, 15793736, 19742170, 39484340, 78968680]

約数ペア:

[(1, 78968680), (2, 39484340), (4, 19742170), (5, 15793736), (7, 11281240), (8, 9871085), (10, 7896868), (14, 5640620), (20, 3948434), (28, 2820310), (35, 2256248), (40, 1974217), (56, 1410155), (70, 1128124), (139, 568120), (140, 564062), (278, 284060), (280, 282031), (556, 142030), (695, 113624), (973, 81160), (1112, 71015), (1390, 56812), (1946, 40580), (2029, 38920), (2780, 28406), (3892, 20290), (4058, 19460), (4865, 16232), (5560, 14203), (7784, 10145), (8116, 9730)]