1385860

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{521}}^1$

素因数の和:556

約数の個数: 48

約数和(自身を含む): 3507840

約数和(自身を除く): 2121980

約数列:

[1, 2, 4, 5, 7, 10, 14, 19, 20, 28, 35, 38, 70, 76, 95, 133, 140, 190, 266, 380, 521, 532, 665, 1042, 1330, 2084, 2605, 2660, 3647, 5210, 7294, 9899, 10420, 14588, 18235, 19798, 36470, 39596, 49495, 69293, 72940, 98990, 138586, 197980, 277172, 346465, 692930, 1385860]

約数ペア:

[(1, 1385860), (2, 692930), (4, 346465), (5, 277172), (7, 197980), (10, 138586), (14, 98990), (19, 72940), (20, 69293), (28, 49495), (35, 39596), (38, 36470), (70, 19798), (76, 18235), (95, 14588), (133, 10420), (140, 9899), (190, 7294), (266, 5210), (380, 3647), (521, 2660), (532, 2605), (665, 2084), (1042, 1330)]