21456549

素因数分解:

$3^3\times {\mathrm{29}}^1\times {\mathrm{67}}^1\times {\mathrm{409}}^1$

素因数の和:514

約数の個数: 32

約数和(自身を含む): 33456000

約数和(自身を除く): 11999451

約数列:

[1, 3, 9, 27, 29, 67, 87, 201, 261, 409, 603, 783, 1227, 1809, 1943, 3681, 5829, 11043, 11861, 17487, 27403, 35583, 52461, 82209, 106749, 246627, 320247, 739881, 794687, 2384061, 7152183, 21456549]

約数ペア:

[(1, 21456549), (3, 7152183), (9, 2384061), (27, 794687), (29, 739881), (67, 320247), (87, 246627), (201, 106749), (261, 82209), (409, 52461), (603, 35583), (783, 27403), (1227, 17487), (1809, 11861), (1943, 11043), (3681, 5829)]