19781172

素因数分解:

$2^2\times 3^5\times {\mathrm{47}}^1\times {\mathrm{433}}^1$

素因数の和:499

約数の個数: 72

約数和(自身を含む): 53079936

約数和(自身を除く): 33298764

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 27, 36, 47, 54, 81, 94, 108, 141, 162, 188, 243, 282, 324, 423, 433, 486, 564, 846, 866, 972, 1269, 1299, 1692, 1732, 2538, 2598, 3807, 3897, 5076, 5196, 7614, 7794, 11421, 11691, 15228, 15588, 20351, 22842, 23382, 35073, 40702, 45684, 46764, 61053, 70146, 81404, 105219, 122106, 140292, 183159, 210438, 244212, 366318, 420876, 549477, 732636, 1098954, 1648431, 2197908, 3296862, 4945293, 6593724, 9890586, 19781172]

約数ペア:

[(1, 19781172), (2, 9890586), (3, 6593724), (4, 4945293), (6, 3296862), (9, 2197908), (12, 1648431), (18, 1098954), (27, 732636), (36, 549477), (47, 420876), (54, 366318), (81, 244212), (94, 210438), (108, 183159), (141, 140292), (162, 122106), (188, 105219), (243, 81404), (282, 70146), (324, 61053), (423, 46764), (433, 45684), (486, 40702), (564, 35073), (846, 23382), (866, 22842), (972, 20351), (1269, 15588), (1299, 15228), (1692, 11691), (1732, 11421), (2538, 7794), (2598, 7614), (3807, 5196), (3897, 5076)]