18936880

素因数分解:

$2^4\times 5^1\times {\mathrm{67}}^1\times {\mathrm{3533}}^1$

素因数の和:3613

約数の個数: 40

約数和(自身を含む): 44698032

約数和(自身を除く): 25761152

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 67, 80, 134, 268, 335, 536, 670, 1072, 1340, 2680, 3533, 5360, 7066, 14132, 17665, 28264, 35330, 56528, 70660, 141320, 236711, 282640, 473422, 946844, 1183555, 1893688, 2367110, 3787376, 4734220, 9468440, 18936880]

約数ペア:

[(1, 18936880), (2, 9468440), (4, 4734220), (5, 3787376), (8, 2367110), (10, 1893688), (16, 1183555), (20, 946844), (40, 473422), (67, 282640), (80, 236711), (134, 141320), (268, 70660), (335, 56528), (536, 35330), (670, 28264), (1072, 17665), (1340, 14132), (2680, 7066), (3533, 5360)]