1820671720

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{282713}}^1$

素因数の和:282754

約数の個数: 64

約数和(自身を含む): 4885297920

約数和(自身を除く): 3064626200

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 23, 28, 35, 40, 46, 56, 70, 92, 115, 140, 161, 184, 230, 280, 322, 460, 644, 805, 920, 1288, 1610, 3220, 6440, 282713, 565426, 1130852, 1413565, 1978991, 2261704, 2827130, 3957982, 5654260, 6502399, 7915964, 9894955, 11308520, 13004798, 15831928, 19789910, 26009596, 32511995, 39579820, 45516793, 52019192, 65023990, 79159640, 91033586, 130047980, 182067172, 227583965, 260095960, 364134344, 455167930, 910335860, 1820671720]

約数ペア:

[(1, 1820671720), (2, 910335860), (4, 455167930), (5, 364134344), (7, 260095960), (8, 227583965), (10, 182067172), (14, 130047980), (20, 91033586), (23, 79159640), (28, 65023990), (35, 52019192), (40, 45516793), (46, 39579820), (56, 32511995), (70, 26009596), (92, 19789910), (115, 15831928), (140, 13004798), (161, 11308520), (184, 9894955), (230, 7915964), (280, 6502399), (322, 5654260), (460, 3957982), (644, 2827130), (805, 2261704), (920, 1978991), (1288, 1413565), (1610, 1130852), (3220, 565426), (6440, 282713)]