1515591

素因数分解:

$3^9\times 7^1\times {\mathrm{11}}^1$

素因数の和:45

約数の個数: 40

約数和(自身を含む): 2834304

約数和(自身を除く): 1318713

約数列:

[1, 3, 7, 9, 11, 21, 27, 33, 63, 77, 81, 99, 189, 231, 243, 297, 567, 693, 729, 891, 1701, 2079, 2187, 2673, 5103, 6237, 6561, 8019, 15309, 18711, 19683, 24057, 45927, 56133, 72171, 137781, 168399, 216513, 505197, 1515591]

約数ペア:

[(1, 1515591), (3, 505197), (7, 216513), (9, 168399), (11, 137781), (21, 72171), (27, 56133), (33, 45927), (63, 24057), (77, 19683), (81, 18711), (99, 15309), (189, 8019), (231, 6561), (243, 6237), (297, 5103), (567, 2673), (693, 2187), (729, 2079), (891, 1701)]