38783780

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{139}}^1\times {\mathrm{1993}}^1$

素因数の和:2148

約数の個数: 48

約数和(自身を含む): 93797760

約数和(自身を除く): 55013980

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 139, 140, 278, 556, 695, 973, 1390, 1946, 1993, 2780, 3892, 3986, 4865, 7972, 9730, 9965, 13951, 19460, 19930, 27902, 39860, 55804, 69755, 139510, 277027, 279020, 554054, 1108108, 1385135, 1939189, 2770270, 3878378, 5540540, 7756756, 9695945, 19391890, 38783780]

約数ペア:

[(1, 38783780), (2, 19391890), (4, 9695945), (5, 7756756), (7, 5540540), (10, 3878378), (14, 2770270), (20, 1939189), (28, 1385135), (35, 1108108), (70, 554054), (139, 279020), (140, 277027), (278, 139510), (556, 69755), (695, 55804), (973, 39860), (1390, 27902), (1946, 19930), (1993, 19460), (2780, 13951), (3892, 9965), (3986, 9730), (4865, 7972)]