21999488

素因数分解:

$2^7\times 7^1\times {\mathrm{43}}^1\times {\mathrm{571}}^1$

素因数の和:635

約数の個数: 64

約数和(自身を含む): 51342720

約数和(自身を除く): 29343232

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 32, 43, 56, 64, 86, 112, 128, 172, 224, 301, 344, 448, 571, 602, 688, 896, 1142, 1204, 1376, 2284, 2408, 2752, 3997, 4568, 4816, 5504, 7994, 9136, 9632, 15988, 18272, 19264, 24553, 31976, 36544, 38528, 49106, 63952, 73088, 98212, 127904, 171871, 196424, 255808, 343742, 392848, 511616, 687484, 785696, 1374968, 1571392, 2749936, 3142784, 5499872, 10999744, 21999488]

約数ペア:

[(1, 21999488), (2, 10999744), (4, 5499872), (7, 3142784), (8, 2749936), (14, 1571392), (16, 1374968), (28, 785696), (32, 687484), (43, 511616), (56, 392848), (64, 343742), (86, 255808), (112, 196424), (128, 171871), (172, 127904), (224, 98212), (301, 73088), (344, 63952), (448, 49106), (571, 38528), (602, 36544), (688, 31976), (896, 24553), (1142, 19264), (1204, 18272), (1376, 15988), (2284, 9632), (2408, 9136), (2752, 7994), (3997, 5504), (4568, 4816)]