18184520

素因数分解:

$2^3\times 5^1\times {\mathrm{19}}^1\times {\mathrm{71}}^1\times {\mathrm{337}}^1$

素因数の和:438

約数の個数: 64

約数和(自身を含む): 43804800

約数和(自身を除く): 25620280

約数列:

[1, 2, 4, 5, 8, 10, 19, 20, 38, 40, 71, 76, 95, 142, 152, 190, 284, 337, 355, 380, 568, 674, 710, 760, 1348, 1349, 1420, 1685, 2696, 2698, 2840, 3370, 5396, 6403, 6740, 6745, 10792, 12806, 13480, 13490, 23927, 25612, 26980, 32015, 47854, 51224, 53960, 64030, 95708, 119635, 128060, 191416, 239270, 256120, 454613, 478540, 909226, 957080, 1818452, 2273065, 3636904, 4546130, 9092260, 18184520]

約数ペア:

[(1, 18184520), (2, 9092260), (4, 4546130), (5, 3636904), (8, 2273065), (10, 1818452), (19, 957080), (20, 909226), (38, 478540), (40, 454613), (71, 256120), (76, 239270), (95, 191416), (142, 128060), (152, 119635), (190, 95708), (284, 64030), (337, 53960), (355, 51224), (380, 47854), (568, 32015), (674, 26980), (710, 25612), (760, 23927), (1348, 13490), (1349, 13480), (1420, 12806), (1685, 10792), (2696, 6745), (2698, 6740), (2840, 6403), (3370, 5396)]