21005928

素因数分解:

$2^3\times 3^2\times {\mathrm{167}}^1\times {\mathrm{1747}}^1$

素因数の和:1926

約数の個数: 48

約数和(自身を含む): 57264480

約数和(自身を除く): 36258552

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 18, 24, 36, 72, 167, 334, 501, 668, 1002, 1336, 1503, 1747, 2004, 3006, 3494, 4008, 5241, 6012, 6988, 10482, 12024, 13976, 15723, 20964, 31446, 41928, 62892, 125784, 291749, 583498, 875247, 1166996, 1750494, 2333992, 2625741, 3500988, 5251482, 7001976, 10502964, 21005928]

約数ペア:

[(1, 21005928), (2, 10502964), (3, 7001976), (4, 5251482), (6, 3500988), (8, 2625741), (9, 2333992), (12, 1750494), (18, 1166996), (24, 875247), (36, 583498), (72, 291749), (167, 125784), (334, 62892), (501, 41928), (668, 31446), (1002, 20964), (1336, 15723), (1503, 13976), (1747, 12024), (2004, 10482), (3006, 6988), (3494, 6012), (4008, 5241)]