21111984

素因数分解:

$2^4\times 3^2\times {\mathrm{271}}^1\times {\mathrm{541}}^1$

素因数の和:826

約数の個数: 60

約数和(自身を含む): 59411872

約数和(自身を除く): 38299888

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 16, 18, 24, 36, 48, 72, 144, 271, 541, 542, 813, 1082, 1084, 1623, 1626, 2164, 2168, 2439, 3246, 3252, 4328, 4336, 4869, 4878, 6492, 6504, 8656, 9738, 9756, 12984, 13008, 19476, 19512, 25968, 38952, 39024, 77904, 146611, 293222, 439833, 586444, 879666, 1172888, 1319499, 1759332, 2345776, 2638998, 3518664, 5277996, 7037328, 10555992, 21111984]

約数ペア:

[(1, 21111984), (2, 10555992), (3, 7037328), (4, 5277996), (6, 3518664), (8, 2638998), (9, 2345776), (12, 1759332), (16, 1319499), (18, 1172888), (24, 879666), (36, 586444), (48, 439833), (72, 293222), (144, 146611), (271, 77904), (541, 39024), (542, 38952), (813, 25968), (1082, 19512), (1084, 19476), (1623, 13008), (1626, 12984), (2164, 9756), (2168, 9738), (2439, 8656), (3246, 6504), (3252, 6492), (4328, 4878), (4336, 4869)]