81215379

素因数分解:

$3^4\times 7^1\times {\mathrm{227}}^1\times {\mathrm{631}}^1$

素因数の和:877

約数の個数: 40

約数和(自身を含む): 139484928

約数和(自身を除く): 58269549

約数列:

[1, 3, 7, 9, 21, 27, 63, 81, 189, 227, 567, 631, 681, 1589, 1893, 2043, 4417, 4767, 5679, 6129, 13251, 14301, 17037, 18387, 39753, 42903, 51111, 119259, 128709, 143237, 357777, 429711, 1002659, 1289133, 3007977, 3867399, 9023931, 11602197, 27071793, 81215379]

約数ペア:

[(1, 81215379), (3, 27071793), (7, 11602197), (9, 9023931), (21, 3867399), (27, 3007977), (63, 1289133), (81, 1002659), (189, 429711), (227, 357777), (567, 143237), (631, 128709), (681, 119259), (1589, 51111), (1893, 42903), (2043, 39753), (4417, 18387), (4767, 17037), (5679, 14301), (6129, 13251)]