39678940

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{139}}^1\times {\mathrm{2039}}^1$

素因数の和:2194

約数の個数: 48

約数和(自身を含む): 95961600

約数和(自身を除く): 56282660

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 139, 140, 278, 556, 695, 973, 1390, 1946, 2039, 2780, 3892, 4078, 4865, 8156, 9730, 10195, 14273, 19460, 20390, 28546, 40780, 57092, 71365, 142730, 283421, 285460, 566842, 1133684, 1417105, 1983947, 2834210, 3967894, 5668420, 7935788, 9919735, 19839470, 39678940]

約数ペア:

[(1, 39678940), (2, 19839470), (4, 9919735), (5, 7935788), (7, 5668420), (10, 3967894), (14, 2834210), (20, 1983947), (28, 1417105), (35, 1133684), (70, 566842), (139, 285460), (140, 283421), (278, 142730), (556, 71365), (695, 57092), (973, 40780), (1390, 28546), (1946, 20390), (2039, 19460), (2780, 14273), (3892, 10195), (4078, 9730), (4865, 8156)]