20523952

素因数分解:

$2^4\times {\mathrm{19}}^1\times {\mathrm{181}}^1\times {\mathrm{373}}^1$

素因数の和:581

約数の個数: 40

約数和(自身を含む): 42202160

約数和(自身を除く): 21678208

約数列:

[1, 2, 4, 8, 16, 19, 38, 76, 152, 181, 304, 362, 373, 724, 746, 1448, 1492, 2896, 2984, 3439, 5968, 6878, 7087, 13756, 14174, 27512, 28348, 55024, 56696, 67513, 113392, 135026, 270052, 540104, 1080208, 1282747, 2565494, 5130988, 10261976, 20523952]

約数ペア:

[(1, 20523952), (2, 10261976), (4, 5130988), (8, 2565494), (16, 1282747), (19, 1080208), (38, 540104), (76, 270052), (152, 135026), (181, 113392), (304, 67513), (362, 56696), (373, 55024), (724, 28348), (746, 27512), (1448, 14174), (1492, 13756), (2896, 7087), (2984, 6878), (3439, 5968)]