18161990

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{103}}^1\times {\mathrm{229}}^1$

素因数の和:357

約数の個数: 64

約数和(自身を含む): 41333760

約数和(自身を除く): 23171770

約数列:

[1, 2, 5, 7, 10, 11, 14, 22, 35, 55, 70, 77, 103, 110, 154, 206, 229, 385, 458, 515, 721, 770, 1030, 1133, 1145, 1442, 1603, 2266, 2290, 2519, 3206, 3605, 5038, 5665, 7210, 7931, 8015, 11330, 12595, 15862, 16030, 17633, 23587, 25190, 35266, 39655, 47174, 79310, 88165, 117935, 165109, 176330, 235870, 259457, 330218, 518914, 825545, 1297285, 1651090, 1816199, 2594570, 3632398, 9080995, 18161990]

約数ペア:

[(1, 18161990), (2, 9080995), (5, 3632398), (7, 2594570), (10, 1816199), (11, 1651090), (14, 1297285), (22, 825545), (35, 518914), (55, 330218), (70, 259457), (77, 235870), (103, 176330), (110, 165109), (154, 117935), (206, 88165), (229, 79310), (385, 47174), (458, 39655), (515, 35266), (721, 25190), (770, 23587), (1030, 17633), (1133, 16030), (1145, 15862), (1442, 12595), (1603, 11330), (2266, 8015), (2290, 7931), (2519, 7210), (3206, 5665), (3605, 5038)]