21081222

素因数分解:

$2^1\times 3^6\times {\mathrm{19}}^1\times {\mathrm{761}}^1$

素因数の和:800

約数の個数: 56

約数和(自身を含む): 49971960

約数和(自身を除く): 28890738

約数列:

[1, 2, 3, 6, 9, 18, 19, 27, 38, 54, 57, 81, 114, 162, 171, 243, 342, 486, 513, 729, 761, 1026, 1458, 1522, 1539, 2283, 3078, 4566, 4617, 6849, 9234, 13698, 13851, 14459, 20547, 27702, 28918, 41094, 43377, 61641, 86754, 123282, 130131, 184923, 260262, 369846, 390393, 554769, 780786, 1109538, 1171179, 2342358, 3513537, 7027074, 10540611, 21081222]

約数ペア:

[(1, 21081222), (2, 10540611), (3, 7027074), (6, 3513537), (9, 2342358), (18, 1171179), (19, 1109538), (27, 780786), (38, 554769), (54, 390393), (57, 369846), (81, 260262), (114, 184923), (162, 130131), (171, 123282), (243, 86754), (342, 61641), (486, 43377), (513, 41094), (729, 28918), (761, 27702), (1026, 20547), (1458, 14459), (1522, 13851), (1539, 13698), (2283, 9234), (3078, 6849), (4566, 4617)]