420147

素因数分解:

$3^5\times 7^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1$

素因数の和:54

約数の個数: 48

約数和(自身を含む): 815360

約数和(自身を除く): 395213

約数列:

[1, 3, 7, 9, 13, 19, 21, 27, 39, 57, 63, 81, 91, 117, 133, 171, 189, 243, 247, 273, 351, 399, 513, 567, 741, 819, 1053, 1197, 1539, 1701, 1729, 2223, 2457, 3159, 3591, 4617, 5187, 6669, 7371, 10773, 15561, 20007, 22113, 32319, 46683, 60021, 140049, 420147]

約数ペア:

[(1, 420147), (3, 140049), (7, 60021), (9, 46683), (13, 32319), (19, 22113), (21, 20007), (27, 15561), (39, 10773), (57, 7371), (63, 6669), (81, 5187), (91, 4617), (117, 3591), (133, 3159), (171, 2457), (189, 2223), (243, 1729), (247, 1701), (273, 1539), (351, 1197), (399, 1053), (513, 819), (567, 741)]