19804904

素因数分解:

$2^3\times 7^1\times {\mathrm{251}}^1\times {\mathrm{1409}}^1$

素因数の和:1673

約数の個数: 32

約数和(自身を含む): 42638400

約数和(自身を除く): 22833496

約数列:

[1, 2, 4, 7, 8, 14, 28, 56, 251, 502, 1004, 1409, 1757, 2008, 2818, 3514, 5636, 7028, 9863, 11272, 14056, 19726, 39452, 78904, 353659, 707318, 1414636, 2475613, 2829272, 4951226, 9902452, 19804904]

約数ペア:

[(1, 19804904), (2, 9902452), (4, 4951226), (7, 2829272), (8, 2475613), (14, 1414636), (28, 707318), (56, 353659), (251, 78904), (502, 39452), (1004, 19726), (1409, 14056), (1757, 11272), (2008, 9863), (2818, 7028), (3514, 5636)]