18311860

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{139}}^1\times {\mathrm{941}}^1$

素因数の和:1096

約数の個数: 48

約数和(自身を含む): 44311680

約数和(自身を除く): 25999820

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 139, 140, 278, 556, 695, 941, 973, 1390, 1882, 1946, 2780, 3764, 3892, 4705, 4865, 6587, 9410, 9730, 13174, 18820, 19460, 26348, 32935, 65870, 130799, 131740, 261598, 523196, 653995, 915593, 1307990, 1831186, 2615980, 3662372, 4577965, 9155930, 18311860]

約数ペア:

[(1, 18311860), (2, 9155930), (4, 4577965), (5, 3662372), (7, 2615980), (10, 1831186), (14, 1307990), (20, 915593), (28, 653995), (35, 523196), (70, 261598), (139, 131740), (140, 130799), (278, 65870), (556, 32935), (695, 26348), (941, 19460), (973, 18820), (1390, 13174), (1882, 9730), (1946, 9410), (2780, 6587), (3764, 4865), (3892, 4705)]