81221786

素因数分解:

$2^1\times {\mathrm{23}}^1\times {\mathrm{97}}^1\times {\mathrm{109}}^1\times {\mathrm{167}}^1$

素因数の和:398

約数の個数: 32

約数和(自身を含む): 130394880

約数和(自身を除く): 49173094

約数列:

[1, 2, 23, 46, 97, 109, 167, 194, 218, 334, 2231, 2507, 3841, 4462, 5014, 7682, 10573, 16199, 18203, 21146, 32398, 36406, 243179, 372577, 418669, 486358, 745154, 837338, 1765691, 3531382, 40610893, 81221786]

約数ペア:

[(1, 81221786), (2, 40610893), (23, 3531382), (46, 1765691), (97, 837338), (109, 745154), (167, 486358), (194, 418669), (218, 372577), (334, 243179), (2231, 36406), (2507, 32398), (3841, 21146), (4462, 18203), (5014, 16199), (7682, 10573)]