15681519

素因数分解:

$3^6\times 7^2\times {\mathrm{439}}^1$

素因数の和:471

約数の個数: 42

約数和(自身を含む): 27412440

約数和(自身を除く): 11730921

約数列:

[1, 3, 7, 9, 21, 27, 49, 63, 81, 147, 189, 243, 439, 441, 567, 729, 1317, 1323, 1701, 3073, 3951, 3969, 5103, 9219, 11853, 11907, 21511, 27657, 35559, 35721, 64533, 82971, 106677, 193599, 248913, 320031, 580797, 746739, 1742391, 2240217, 5227173, 15681519]

約数ペア:

[(1, 15681519), (3, 5227173), (7, 2240217), (9, 1742391), (21, 746739), (27, 580797), (49, 320031), (63, 248913), (81, 193599), (147, 106677), (189, 82971), (243, 64533), (439, 35721), (441, 35559), (567, 27657), (729, 21511), (1317, 11907), (1323, 11853), (1701, 9219), (3073, 5103), (3951, 3969)]