18919290

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{139}}^1\times {\mathrm{349}}^1$

素因数の和:511

約数の個数: 64

約数和(自身を含む): 49392000

約数和(自身を除く): 30472710

約数列:

[1, 2, 3, 5, 6, 10, 13, 15, 26, 30, 39, 65, 78, 130, 139, 195, 278, 349, 390, 417, 695, 698, 834, 1047, 1390, 1745, 1807, 2085, 2094, 3490, 3614, 4170, 4537, 5235, 5421, 9035, 9074, 10470, 10842, 13611, 18070, 22685, 27105, 27222, 45370, 48511, 54210, 68055, 97022, 136110, 145533, 242555, 291066, 485110, 630643, 727665, 1261286, 1455330, 1891929, 3153215, 3783858, 6306430, 9459645, 18919290]

約数ペア:

[(1, 18919290), (2, 9459645), (3, 6306430), (5, 3783858), (6, 3153215), (10, 1891929), (13, 1455330), (15, 1261286), (26, 727665), (30, 630643), (39, 485110), (65, 291066), (78, 242555), (130, 145533), (139, 136110), (195, 97022), (278, 68055), (349, 54210), (390, 48511), (417, 45370), (695, 27222), (698, 27105), (834, 22685), (1047, 18070), (1390, 13611), (1745, 10842), (1807, 10470), (2085, 9074), (2094, 9035), (3490, 5421), (3614, 5235), (4170, 4537)]