81109917

素因数分解:

$3^4\times 7^1\times {\mathrm{19}}^1\times {\mathrm{7529}}^1$

素因数の和:7567

約数の個数: 40

約数和(自身を含む): 145780800

約数和(自身を除く): 64670883

約数列:

[1, 3, 7, 9, 19, 21, 27, 57, 63, 81, 133, 171, 189, 399, 513, 567, 1197, 1539, 3591, 7529, 10773, 22587, 52703, 67761, 143051, 158109, 203283, 429153, 474327, 609849, 1001357, 1287459, 1422981, 3004071, 3862377, 4268943, 9012213, 11587131, 27036639, 81109917]

約数ペア:

[(1, 81109917), (3, 27036639), (7, 11587131), (9, 9012213), (19, 4268943), (21, 3862377), (27, 3004071), (57, 1422981), (63, 1287459), (81, 1001357), (133, 609849), (171, 474327), (189, 429153), (399, 203283), (513, 158109), (567, 143051), (1197, 67761), (1539, 52703), (3591, 22587), (7529, 10773)]