16518789

素因数分解:

$3^3\times 7^1\times {\mathrm{71}}^1\times {\mathrm{1231}}^1$

素因数の和:1318

約数の個数: 32

約数和(自身を含む): 28385280

約数和(自身を除く): 11866491

約数列:

[1, 3, 7, 9, 21, 27, 63, 71, 189, 213, 497, 639, 1231, 1491, 1917, 3693, 4473, 8617, 11079, 13419, 25851, 33237, 77553, 87401, 232659, 262203, 611807, 786609, 1835421, 2359827, 5506263, 16518789]

約数ペア:

[(1, 16518789), (3, 5506263), (7, 2359827), (9, 1835421), (21, 786609), (27, 611807), (63, 262203), (71, 232659), (189, 87401), (213, 77553), (497, 33237), (639, 25851), (1231, 13419), (1491, 11079), (1917, 8617), (3693, 4473)]