21987984

素因数分解:

$2^4\times 3^1\times {\mathrm{89}}^1\times {\mathrm{5147}}^1$

素因数の和:5247

約数の個数: 40

約数和(自身を含む): 57451680

約数和(自身を除く): 35463696

約数列:

[1, 2, 3, 4, 6, 8, 12, 16, 24, 48, 89, 178, 267, 356, 534, 712, 1068, 1424, 2136, 4272, 5147, 10294, 15441, 20588, 30882, 41176, 61764, 82352, 123528, 247056, 458083, 916166, 1374249, 1832332, 2748498, 3664664, 5496996, 7329328, 10993992, 21987984]

約数ペア:

[(1, 21987984), (2, 10993992), (3, 7329328), (4, 5496996), (6, 3664664), (8, 2748498), (12, 1832332), (16, 1374249), (24, 916166), (48, 458083), (89, 247056), (178, 123528), (267, 82352), (356, 61764), (534, 41176), (712, 30882), (1068, 20588), (1424, 15441), (2136, 10294), (4272, 5147)]