420750687

素因数分解:

$3^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{67}}^1\times {\mathrm{15739}}^1$

素因数の和:15835

約数の個数: 32

約数和(自身を含む): 685004800

約数和(自身を除く): 264254113

約数列:

[1, 3, 7, 19, 21, 57, 67, 133, 201, 399, 469, 1273, 1407, 3819, 8911, 15739, 26733, 47217, 110173, 299041, 330519, 897123, 1054513, 2093287, 3163539, 6279861, 7381591, 20035747, 22144773, 60107241, 140250229, 420750687]

約数ペア:

[(1, 420750687), (3, 140250229), (7, 60107241), (19, 22144773), (21, 20035747), (57, 7381591), (67, 6279861), (133, 3163539), (201, 2093287), (399, 1054513), (469, 897123), (1273, 330519), (1407, 299041), (3819, 110173), (8911, 47217), (15739, 26733)]