21809984

素因数分解:

$2^6\times 7^1\times {\mathrm{89}}^1\times {\mathrm{547}}^1$

素因数の和:655

約数の個数: 56

約数和(自身を含む): 50109120

約数和(自身を除く): 28299136

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 32, 56, 64, 89, 112, 178, 224, 356, 448, 547, 623, 712, 1094, 1246, 1424, 2188, 2492, 2848, 3829, 4376, 4984, 5696, 7658, 8752, 9968, 15316, 17504, 19936, 30632, 35008, 39872, 48683, 61264, 97366, 122528, 194732, 245056, 340781, 389464, 681562, 778928, 1363124, 1557856, 2726248, 3115712, 5452496, 10904992, 21809984]

約数ペア:

[(1, 21809984), (2, 10904992), (4, 5452496), (7, 3115712), (8, 2726248), (14, 1557856), (16, 1363124), (28, 778928), (32, 681562), (56, 389464), (64, 340781), (89, 245056), (112, 194732), (178, 122528), (224, 97366), (356, 61264), (448, 48683), (547, 39872), (623, 35008), (712, 30632), (1094, 19936), (1246, 17504), (1424, 15316), (2188, 9968), (2492, 8752), (2848, 7658), (3829, 5696), (4376, 4984)]