21484216

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{167}}^1\times {\mathrm{1237}}^1$

素因数の和:1423

約数の個数: 32

約数和(自身を含む): 43676640

約数和(自身を除く): 22192424

約数列:

[1, 2, 4, 8, 13, 26, 52, 104, 167, 334, 668, 1237, 1336, 2171, 2474, 4342, 4948, 8684, 9896, 16081, 17368, 32162, 64324, 128648, 206579, 413158, 826316, 1652632, 2685527, 5371054, 10742108, 21484216]

約数ペア:

[(1, 21484216), (2, 10742108), (4, 5371054), (8, 2685527), (13, 1652632), (26, 826316), (52, 413158), (104, 206579), (167, 128648), (334, 64324), (668, 32162), (1237, 17368), (1336, 16081), (2171, 9896), (2474, 8684), (4342, 4948)]