818580

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{1949}}^1$

素因数の和:1968

約数の個数: 48

約数和(自身を含む): 2620800

約数和(自身を除く): 1802220

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 60, 70, 84, 105, 140, 210, 420, 1949, 3898, 5847, 7796, 9745, 11694, 13643, 19490, 23388, 27286, 29235, 38980, 40929, 54572, 58470, 68215, 81858, 116940, 136430, 163716, 204645, 272860, 409290, 818580]

約数ペア:

[(1, 818580), (2, 409290), (3, 272860), (4, 204645), (5, 163716), (6, 136430), (7, 116940), (10, 81858), (12, 68215), (14, 58470), (15, 54572), (20, 40929), (21, 38980), (28, 29235), (30, 27286), (35, 23388), (42, 19490), (60, 13643), (70, 11694), (84, 9745), (105, 7796), (140, 5847), (210, 3898), (420, 1949)]