20666512

素因数分解:

$2^4\times {\mathrm{23}}^1\times {\mathrm{89}}^1\times {\mathrm{631}}^1$

素因数の和:751

約数の個数: 40

約数和(自身を含む): 42318720

約数和(自身を除く): 21652208

約数列:

[1, 2, 4, 8, 16, 23, 46, 89, 92, 178, 184, 356, 368, 631, 712, 1262, 1424, 2047, 2524, 4094, 5048, 8188, 10096, 14513, 16376, 29026, 32752, 56159, 58052, 112318, 116104, 224636, 232208, 449272, 898544, 1291657, 2583314, 5166628, 10333256, 20666512]

約数ペア:

[(1, 20666512), (2, 10333256), (4, 5166628), (8, 2583314), (16, 1291657), (23, 898544), (46, 449272), (89, 232208), (92, 224636), (178, 116104), (184, 112318), (356, 58052), (368, 56159), (631, 32752), (712, 29026), (1262, 16376), (1424, 14513), (2047, 10096), (2524, 8188), (4094, 5048)]