15571521

素因数分解:

$3^4\times 7^1\times {\mathrm{29}}^1\times {\mathrm{947}}^1$

素因数の和:995

約数の個数: 40

約数和(自身を含む): 27529920

約数和(自身を除く): 11958399

約数列:

[1, 3, 7, 9, 21, 27, 29, 63, 81, 87, 189, 203, 261, 567, 609, 783, 947, 1827, 2349, 2841, 5481, 6629, 8523, 16443, 19887, 25569, 27463, 59661, 76707, 82389, 178983, 192241, 247167, 536949, 576723, 741501, 1730169, 2224503, 5190507, 15571521]

約数ペア:

[(1, 15571521), (3, 5190507), (7, 2224503), (9, 1730169), (21, 741501), (27, 576723), (29, 536949), (63, 247167), (81, 192241), (87, 178983), (189, 82389), (203, 76707), (261, 59661), (567, 27463), (609, 25569), (783, 19887), (947, 16443), (1827, 8523), (2349, 6629), (2841, 5481)]