21449313

素因数分解:

$3^3\times {\mathrm{67}}^1\times {\mathrm{71}}^1\times {\mathrm{167}}^1$

素因数の和:314

約数の個数: 32

約数和(自身を含む): 32901120

約数和(自身を除く): 11451807

約数列:

[1, 3, 9, 27, 67, 71, 167, 201, 213, 501, 603, 639, 1503, 1809, 1917, 4509, 4757, 11189, 11857, 14271, 33567, 35571, 42813, 100701, 106713, 128439, 302103, 320139, 794419, 2383257, 7149771, 21449313]

約数ペア:

[(1, 21449313), (3, 7149771), (9, 2383257), (27, 794419), (67, 320139), (71, 302103), (167, 128439), (201, 106713), (213, 100701), (501, 42813), (603, 35571), (639, 33567), (1503, 14271), (1809, 11857), (1917, 11189), (4509, 4757)]