21681216

素因数分解:

$2^6\times 3^3\times {\mathrm{12547}}^1$

素因数の和:12568

約数の個数: 56

約数和(自身を含む): 63743840

約数和(自身を除く): 42062624

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 16, 18, 24, 27, 32, 36, 48, 54, 64, 72, 96, 108, 144, 192, 216, 288, 432, 576, 864, 1728, 12547, 25094, 37641, 50188, 75282, 100376, 112923, 150564, 200752, 225846, 301128, 338769, 401504, 451692, 602256, 677538, 803008, 903384, 1204512, 1355076, 1806768, 2409024, 2710152, 3613536, 5420304, 7227072, 10840608, 21681216]

約数ペア:

[(1, 21681216), (2, 10840608), (3, 7227072), (4, 5420304), (6, 3613536), (8, 2710152), (9, 2409024), (12, 1806768), (16, 1355076), (18, 1204512), (24, 903384), (27, 803008), (32, 677538), (36, 602256), (48, 451692), (54, 401504), (64, 338769), (72, 301128), (96, 225846), (108, 200752), (144, 150564), (192, 112923), (216, 100376), (288, 75282), (432, 50188), (576, 37641), (864, 25094), (1728, 12547)]