21138930

素因数分解:

$2^1\times 3^2\times 5^1\times {\mathrm{349}}^1\times {\mathrm{673}}^1$

素因数の和:1035

約数の個数: 48

約数和(自身を含む): 55200600

約数和(自身を除く): 34061670

約数列:

[1, 2, 3, 5, 6, 9, 10, 15, 18, 30, 45, 90, 349, 673, 698, 1047, 1346, 1745, 2019, 2094, 3141, 3365, 3490, 4038, 5235, 6057, 6282, 6730, 10095, 10470, 12114, 15705, 20190, 30285, 31410, 60570, 234877, 469754, 704631, 1174385, 1409262, 2113893, 2348770, 3523155, 4227786, 7046310, 10569465, 21138930]

約数ペア:

[(1, 21138930), (2, 10569465), (3, 7046310), (5, 4227786), (6, 3523155), (9, 2348770), (10, 2113893), (15, 1409262), (18, 1174385), (30, 704631), (45, 469754), (90, 234877), (349, 60570), (673, 31410), (698, 30285), (1047, 20190), (1346, 15705), (1745, 12114), (2019, 10470), (2094, 10095), (3141, 6730), (3365, 6282), (3490, 6057), (4038, 5235)]