21244986

素因数分解:

$2^1\times 3^2\times 7^1\times {\mathrm{103}}^1\times {\mathrm{1637}}^1$

素因数の和:1755

約数の個数: 48

約数和(自身を含む): 53149824

約数和(自身を除く): 31904838

約数列:

[1, 2, 3, 6, 7, 9, 14, 18, 21, 42, 63, 103, 126, 206, 309, 618, 721, 927, 1442, 1637, 1854, 2163, 3274, 4326, 4911, 6489, 9822, 11459, 12978, 14733, 22918, 29466, 34377, 68754, 103131, 168611, 206262, 337222, 505833, 1011666, 1180277, 1517499, 2360554, 3034998, 3540831, 7081662, 10622493, 21244986]

約数ペア:

[(1, 21244986), (2, 10622493), (3, 7081662), (6, 3540831), (7, 3034998), (9, 2360554), (14, 1517499), (18, 1180277), (21, 1011666), (42, 505833), (63, 337222), (103, 206262), (126, 168611), (206, 103131), (309, 68754), (618, 34377), (721, 29466), (927, 22918), (1442, 14733), (1637, 12978), (1854, 11459), (2163, 9822), (3274, 6489), (4326, 4911)]