18002380

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^2\times {\mathrm{43}}^1\times {\mathrm{173}}^1$

素因数の和:247

約数の個数: 72

約数和(自身を含む): 42766416

約数和(自身を除く): 24764036

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 43, 44, 55, 86, 110, 121, 172, 173, 215, 220, 242, 346, 430, 473, 484, 605, 692, 860, 865, 946, 1210, 1730, 1892, 1903, 2365, 2420, 3460, 3806, 4730, 5203, 7439, 7612, 9460, 9515, 10406, 14878, 19030, 20812, 20933, 26015, 29756, 37195, 38060, 41866, 52030, 74390, 81829, 83732, 104060, 104665, 148780, 163658, 209330, 327316, 409145, 418660, 818290, 900119, 1636580, 1800238, 3600476, 4500595, 9001190, 18002380]

約数ペア:

[(1, 18002380), (2, 9001190), (4, 4500595), (5, 3600476), (10, 1800238), (11, 1636580), (20, 900119), (22, 818290), (43, 418660), (44, 409145), (55, 327316), (86, 209330), (110, 163658), (121, 148780), (172, 104665), (173, 104060), (215, 83732), (220, 81829), (242, 74390), (346, 52030), (430, 41866), (473, 38060), (484, 37195), (605, 29756), (692, 26015), (860, 20933), (865, 20812), (946, 19030), (1210, 14878), (1730, 10406), (1892, 9515), (1903, 9460), (2365, 7612), (2420, 7439), (3460, 5203), (3806, 4730)]